fuisteis en el tren no
fuisteis en el tren no ?
f w i s t e̞ i s WORD_BOUNDARY e̞ n WORD_BOUNDARY e̞ l WORD_BOUNDARY t ɾ e̞ n WORD_BOUNDARY n o̞ WORD_BOUNDARY
f u i s t e i s WORD_BOUNDARY e n WORD_BOUNDARY e l WORD_BOUNDARY t r e n WORD_BOUNDARY n o WORD_BOUNDARY ? WORD_BOUNDARY