The first classifier, corresponding to the different A forms, determines the transformation of A to Â, while the / h/h classifier determines the correction of h to h. The other classifiers are either not involved since they do not work on any of the word characters, or they determine that no character transformation should happen for this word.
applying the CEC technique in this case changes the word Arbςh to Ârbςh, which is the correct CODA form.