shizuka ni naru koto
shizuka ni naru koto .
ʃ i z ɯ k a WORD_BOUNDARY n i WORD_BOUNDARY n a r ɯ WORD_BOUNDARY k o t o WORD_BOUNDARY
s h i z u k a WORD_BOUNDARY n i WORD_BOUNDARY n a r u WORD_BOUNDARY k o t o WORD_BOUNDARY