a densha biribiri ni natte iru
a densha biribiri ni natte iru ?
a WORD_BOUNDARY d e n ʃ a WORD_BOUNDARY b i r i b i r i WORD_BOUNDARY n i WORD_BOUNDARY n a t t e WORD_BOUNDARY i r ɯ WORD_BOUNDARY
a WORD_BOUNDARY d e n s h a WORD_BOUNDARY b i r i b i r i WORD_BOUNDARY n i WORD_BOUNDARY n a t t e WORD_BOUNDARY i r u WORD_BOUNDARY