duk kusuk kusuk kusuk kusuk kusuk kusuk
duk kusuk kusuk kusuk kusuk kusuk kusuk .
d u k WORD_BOUNDARY k u s u k WORD_BOUNDARY k u s u k WORD_BOUNDARY k u s u k WORD_BOUNDARY k u s u k WORD_BOUNDARY k u s u k WORD_BOUNDARY k u s u k WORD_BOUNDARY
d u k WORD_BOUNDARY k u s u k WORD_BOUNDARY k u s u k WORD_BOUNDARY k u s u k WORD_BOUNDARY k u s u k WORD_BOUNDARY k u s u k WORD_BOUNDARY k u s u k WORD_BOUNDARY . WORD_BOUNDARY