oto ga naru kara ureshigatte
oto ga naru kara ureshigatte .
o t o WORD_BOUNDARY g a WORD_BOUNDARY n a r ɯ WORD_BOUNDARY k a r a WORD_BOUNDARY ɯ r e ʃ i g a t t e WORD_BOUNDARY
o t o WORD_BOUNDARY g a WORD_BOUNDARY n a r u WORD_BOUNDARY k a r a WORD_BOUNDARY u r e s h i g a t t e WORD_BOUNDARY