se abre puerta
se abri puerta
pro:refl v n
se abre puerta .
s e̞ WORD_BOUNDARY a β ɾ e̞ WORD_BOUNDARY p w e̞ ɾ t a WORD_BOUNDARY
s e WORD_BOUNDARY a b r e WORD_BOUNDARY p u e r t a WORD_BOUNDARY . WORD_BOUNDARY