a ver este tren a dónde va
a ver este tren a dónde va ?
a WORD_BOUNDARY β e̞ ɾ WORD_BOUNDARY e̞ s t e̞ WORD_BOUNDARY t ɾ e̞ n WORD_BOUNDARY a WORD_BOUNDARY d o̞ n d e̞ WORD_BOUNDARY β a WORD_BOUNDARY
a WORD_BOUNDARY v e r WORD_BOUNDARY e s t e WORD_BOUNDARY t r e n WORD_BOUNDARY a WORD_BOUNDARY d ó n d e WORD_BOUNDARY v a WORD_BOUNDARY ? WORD_BOUNDARY