ba bo bo bo wa wa
ba bo bo bo wa wa .
b a WORD_BOUNDARY b o WORD_BOUNDARY b o WORD_BOUNDARY b o WORD_BOUNDARY w a WORD_BOUNDARY w a WORD_BOUNDARY
b a WORD_BOUNDARY b o WORD_BOUNDARY b o WORD_BOUNDARY b o WORD_BOUNDARY w a WORD_BOUNDARY w a WORD_BOUNDARY