e sube ó autobús
e sube ó autobús .
e̞ WORD_BOUNDARY s u β e̞ WORD_BOUNDARY o̞ WORD_BOUNDARY a u t o̞ β u s WORD_BOUNDARY
e WORD_BOUNDARY s u b e WORD_BOUNDARY ó WORD_BOUNDARY a u t o b ú s WORD_BOUNDARY . WORD_BOUNDARY