o quando andiamo in treno
o quando andiamo in treno ?
o WORD_BOUNDARY k w a n d o WORD_BOUNDARY a n d j a m o WORD_BOUNDARY i n WORD_BOUNDARY t r ɛ n o WORD_BOUNDARY
o WORD_BOUNDARY q u a n d o WORD_BOUNDARY a n d i a m o WORD_BOUNDARY i n WORD_BOUNDARY t r e n o WORD_BOUNDARY