ésta no ésta es de mamá
ésta no ésta es de mamá .
e̞ s t a WORD_BOUNDARY n o̞ WORD_BOUNDARY e̞ s t a WORD_BOUNDARY e̞ s WORD_BOUNDARY d e̞ WORD_BOUNDARY m a m a WORD_BOUNDARY
é s t a WORD_BOUNDARY n o WORD_BOUNDARY é s t a WORD_BOUNDARY e s WORD_BOUNDARY d e WORD_BOUNDARY m a m á WORD_BOUNDARY . WORD_BOUNDARY