on a fait du vélo
on avoir faire de vélo
pro:sub v:aux part prep n
on a fait du vélo .
ɔ̃ n WORD_BOUNDARY a WORD_BOUNDARY f ɛ WORD_BOUNDARY d y WORD_BOUNDARY v e l o WORD_BOUNDARY
o n WORD_BOUNDARY a WORD_BOUNDARY f a i t WORD_BOUNDARY d u WORD_BOUNDARY v é l o WORD_BOUNDARY