sí esta sí ah no éste no
sí esta sí ah no éste no .
s i WORD_BOUNDARY e̞ s t a WORD_BOUNDARY s i WORD_BOUNDARY a WORD_BOUNDARY n o̞ WORD_BOUNDARY e̞ s t e̞ WORD_BOUNDARY n o̞ WORD_BOUNDARY
s í WORD_BOUNDARY e s t a WORD_BOUNDARY s í WORD_BOUNDARY a h WORD_BOUNDARY n o WORD_BOUNDARY é s t e WORD_BOUNDARY n o WORD_BOUNDARY . WORD_BOUNDARY