ba tipi+tapa tipi+tapa
ba tipi tapa tipi tapa .
b a WORD_BOUNDARY t̪ i p i WORD_BOUNDARY t̪ a p a WORD_BOUNDARY t̪ i p i WORD_BOUNDARY t̪ a p a WORD_BOUNDARY
b a WORD_BOUNDARY t i p i WORD_BOUNDARY t a p a WORD_BOUNDARY t i p i WORD_BOUNDARY t a p a WORD_BOUNDARY . WORD_BOUNDARY