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bio (#4467)
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‎esolang/bio/README.md

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# bio Grammar
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An ANTLR4 grammar for [BIO](https://esolangs.org/wiki/BIO) files.

‎esolang/bio/bio.g4

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/*
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BSD License
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Copyright (c) 2025, Tom Everett
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of Tom Everett nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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// $antlr-format alignTrailingComments true, columnLimit 150, minEmptyLines 1, maxEmptyLinesToKeep 1, reflowComments false, useTab false
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// $antlr-format allowShortRulesOnASingleLine false, allowShortBlocksOnASingleLine true, alignSemicolons hanging, alignColons hanging
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grammar bio;
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program
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: instruction* EOF
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;
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instruction
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: incinstruction
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| decinstruction
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| whileinstruction
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| outputinstruction
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;
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incinstruction
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: '0o' block ';'
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;
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decinstruction
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: '1o' block ';'
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;
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whileinstruction
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: '0i' block '{' instruction* '}' ';'
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;
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outputinstruction
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: '1i' block ';'
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;
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block
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: 'x'
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| 'y'
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| 'z'
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;
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COMMENT
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: '//' ~ [\r\n]+ -> skip
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;
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WS
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: [ \r\n] -> skip
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;
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‎esolang/bio/desc.xml

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<?xml version="1.0" encoding="UTF-8" ?>
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<desc xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../_scripts/desc.xsd">
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<targets>CSharp;Cpp;Dart;Go;Java;JavaScript;PHP;Python3;TypeScript;Antlr4ng</targets>
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</desc>

‎esolang/bio/examples/example1.txt

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0ox; //Increment the block x by 1 9 times
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ix{ //While block x is not 0
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0oy; //Increment the block y by 1 8 times
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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1ox; //Decrement block x by 1
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};
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1iy; //Output block y (H)
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0iy{ //Reset block y to 0
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1oy;
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};
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ix{
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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1ox;
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};
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0oy;
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1iy; //Output block y (e)
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0iy{
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1oy;
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};
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ix{
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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1ox;
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};
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1iy; //Output block y (l)
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1iy; //Output block y again
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0iy{
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1oy;
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};
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ix{
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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1ox;
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};
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0oy;
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1iy; //Output block y (o)
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0iy{
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1oy;
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};
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0ox;
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0ox;
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0ox;
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0ox;
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0ix{
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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1ox;
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};
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1iy; //Output block y (space)
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0iy{
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1oy;
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};
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ix{
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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1ox;
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};
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1oy;
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1iy; //Output block y (W)
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0iy{
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1oy;
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};
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ix{
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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1ox;
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};
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0oy;
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1iy; //Output block y (o)
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0iy{
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1oy;
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};
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ix{
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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1ox;
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};
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0oy;
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0oy;
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1iy; //Output block y (r)
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0iy{
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1oy;
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};
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ix{
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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1ox;
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};
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1iy; //Output block y (l)
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0iy{
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1oy;
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};
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ox;
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0ix{
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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1ox;
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};
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1iy; //Output block y (d)
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0iy{
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1oy;
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};
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0ox;
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0ox;
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0ox;
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0ox;
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0ix{
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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0oy;
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1ox;
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};
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0oy;
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1iy; //Output block y (!)
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0iy{
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1oy;
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};

‎esolang/bio/examples/example2.txt

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0ox; 0oy;
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0ix{ 1ox; 0oy; };
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1iy;

‎esolang/bio/examples/example3.txt

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0ox; 0ox; 0oy;
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0iy{ 0ox; 1oy; };
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1ix;

‎esolang/bio/examples/example4.txt

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0ox; 0ox; 0ox; 0ox; 0ox;
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0ix{ 1ox; 0oy; 0oy; 0oy; 0oy; 0oy; };
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1iy;

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