tu sam tu sam
tu sam tu sam .
t̪̻ u WORD_BOUNDARY s̪̻ ä m WORD_BOUNDARY t̪̻ u WORD_BOUNDARY s̪̻ ä m WORD_BOUNDARY
t u WORD_BOUNDARY s a m WORD_BOUNDARY t u WORD_BOUNDARY s a m WORD_BOUNDARY . WORD_BOUNDARY