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ushiro ga aku no ka ?
ɯ ʃ i r o WORD_BOUNDARY g a WORD_BOUNDARY a k ɯ WORD_BOUNDARY n o WORD_BOUNDARY k a WORD_BOUNDARY
u s h i r o WORD_BOUNDARY g a WORD_BOUNDARY a k u WORD_BOUNDARY n o WORD_BOUNDARY k a WORD_BOUNDARY