se ha ido nadando nadando
se ha ido nadando nadando .
s e̞ WORD_BOUNDARY a WORD_BOUNDARY i d o̞ WORD_BOUNDARY n a d a n d o̞ WORD_BOUNDARY n a d a n d o̞ WORD_BOUNDARY
s e WORD_BOUNDARY h a WORD_BOUNDARY i d o WORD_BOUNDARY n a d a n d o WORD_BOUNDARY n a d a n d o WORD_BOUNDARY . WORD_BOUNDARY