las hermanastras son buenas
las hermanastras son buenas .
l a s WORD_BOUNDARY e̞ ɾ m a n a s t ɾ a s WORD_BOUNDARY s o̞ n WORD_BOUNDARY β w e̞ n a s WORD_BOUNDARY
l a s WORD_BOUNDARY h e r m a n a s t r a s WORD_BOUNDARY s o n WORD_BOUNDARY b u e n a s WORD_BOUNDARY . WORD_BOUNDARY