vamos a abrir la puerta
vamos a abrir la puerta ?
b a m o s WORD_BOUNDARY a WORD_BOUNDARY a β ɾ i ɾ WORD_BOUNDARY l a WORD_BOUNDARY p w e ɾ t a WORD_BOUNDARY
v a m o s WORD_BOUNDARY a WORD_BOUNDARY a b r i r WORD_BOUNDARY l a WORD_BOUNDARY p u e r t a WORD_BOUNDARY