wanwan wa wanwan wanwan
wanwan wa wanwan wanwan ?
w a n w a n WORD_BOUNDARY w a WORD_BOUNDARY w a n w a n WORD_BOUNDARY w a n w a n WORD_BOUNDARY
w a n w a n WORD_BOUNDARY w a WORD_BOUNDARY w a n w a n WORD_BOUNDARY w a n w a n WORD_BOUNDARY