tat tidit tat tidit tidit tidit
tat tidit tat tidit tidit tidit .
t a t WORD_BOUNDARY t i d i t WORD_BOUNDARY t a t WORD_BOUNDARY t i d i t WORD_BOUNDARY t i d i t WORD_BOUNDARY t i d i t WORD_BOUNDARY
t a t WORD_BOUNDARY t i d i t WORD_BOUNDARY t a t WORD_BOUNDARY t i d i t WORD_BOUNDARY t i d i t WORD_BOUNDARY t i d i t WORD_BOUNDARY . WORD_BOUNDARY