sad ti sad ti
sad ti sad ti .
s̪̻ ä d̪̻ WORD_BOUNDARY t̪̻ i WORD_BOUNDARY s̪̻ ä d̪̻ WORD_BOUNDARY t̪̻ i WORD_BOUNDARY
s a d WORD_BOUNDARY t i WORD_BOUNDARY s a d WORD_BOUNDARY t i WORD_BOUNDARY . WORD_BOUNDARY