itu atasa atasa atasa
itu atasa atasa atasa .
i t u WORD_BOUNDARY  a t a s a WORD_BOUNDARY  a t a s a WORD_BOUNDARY  a t a s a WORD_BOUNDARY
i t u WORD_BOUNDARY a t a s a WORD_BOUNDARY a t a s a WORD_BOUNDARY a t a s a WORD_BOUNDARY