Different chars do not work

When I use the same characters it works:

  (key-chord-define-global "CC" 'capitalize-dwim)
  (key-chord-define-global "LL" 'downcase-dwim)
  (key-chord-define-global "uu" 'upcase-dwim)



Changing characters  does not:

  (key-chord-define-global "cv" 'capitalize-dwim) ;; cc is used in access and account
  (key-chord-define-global "l;" 'downcase-dwim) ;; ll is used in too many words (kill, will)
