kuk kukuruyuk kukuruyuk
kuk kukuruyuk kukuruyuk .
k u k WORD_BOUNDARY k u k u r u j u k WORD_BOUNDARY k u k u r u j u k WORD_BOUNDARY
k u k WORD_BOUNDARY k u k u r u y u k WORD_BOUNDARY k u k u r u y u k WORD_BOUNDARY . WORD_BOUNDARY