cierra y abre la boca
cierra y abre la boca ?
s i e̞ r a WORD_BOUNDARY i WORD_BOUNDARY a β ɾ e̞ WORD_BOUNDARY l a WORD_BOUNDARY β o̞ k a WORD_BOUNDARY
c i e r r a WORD_BOUNDARY y WORD_BOUNDARY a b r e WORD_BOUNDARY l a WORD_BOUNDARY b o c a WORD_BOUNDARY ? WORD_BOUNDARY