on a fait du vélo hier
on avoir faire de vélo hier
pro:sub v:aux part prep n n
on a fait du vélo hier ?
ɔ̃ n WORD_BOUNDARY a WORD_BOUNDARY f ɛ WORD_BOUNDARY d y WORD_BOUNDARY v e l o WORD_BOUNDARY  j ɛ ʁ 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 h i e r WORD_BOUNDARY