chi l' ha aperto
chi l' ha aperto ?
k i WORD_BOUNDARY ɛ l l e WORD_BOUNDARY ɐ WORD_BOUNDARY ɐ p ɛ r t o WORD_BOUNDARY
c h i WORD_BOUNDARY l ' WORD_BOUNDARY h a WORD_BOUNDARY a p e r t o WORD_BOUNDARY ? WORD_BOUNDARY