tu empam param param param param pam pam
tu empam param param param param pam pam .
t u WORD_BOUNDARY  ɛ m p a m WORD_BOUNDARY p a r a m WORD_BOUNDARY p a r a m WORD_BOUNDARY p a r a m WORD_BOUNDARY p a r a m WORD_BOUNDARY p a m WORD_BOUNDARY p a m WORD_BOUNDARY
t u WORD_BOUNDARY e m p a m WORD_BOUNDARY p a r a m WORD_BOUNDARY p a r a m WORD_BOUNDARY p a r a m WORD_BOUNDARY p a r a m WORD_BOUNDARY p a m WORD_BOUNDARY p a m WORD_BOUNDARY