tú vas a tercero
tú vas a tercero .
t u WORD_BOUNDARY β a s WORD_BOUNDARY a WORD_BOUNDARY t e̞ ɾ s e̞ ɾ o̞ WORD_BOUNDARY
t ú WORD_BOUNDARY v a s WORD_BOUNDARY a WORD_BOUNDARY t e r c e r o WORD_BOUNDARY . WORD_BOUNDARY