tu di situ di itu tu
tu di situ di itu tu .
t u WORD_BOUNDARY d i WORD_BOUNDARY s i t u WORD_BOUNDARY d i WORD_BOUNDARY  i t u WORD_BOUNDARY t u WORD_BOUNDARY
t u WORD_BOUNDARY d i WORD_BOUNDARY s i t u WORD_BOUNDARY d i WORD_BOUNDARY i t u WORD_BOUNDARY t u WORD_BOUNDARY