las vacas comen heno
las vacas comen heno .
l a s WORD_BOUNDARY β a k a s WORD_BOUNDARY k o̞ m e̞ n WORD_BOUNDARY e̞ n o̞ WORD_BOUNDARY
l a s WORD_BOUNDARY v a c a s WORD_BOUNDARY c o m e n WORD_BOUNDARY h e n o WORD_BOUNDARY . WORD_BOUNDARY