ya udah Mamas truk+trukan
ya udah mamas truk trukan .
j a WORD_BOUNDARY  u d a h WORD_BOUNDARY m a m a s WORD_BOUNDARY t r u k WORD_BOUNDARY t r u k a n WORD_BOUNDARY
y a WORD_BOUNDARY u d a h WORD_BOUNDARY m a m a s WORD_BOUNDARY t r u k WORD_BOUNDARY t r u k a n WORD_BOUNDARY