a la piscina va a la piscina
a la piscina va a la piscina .
a WORD_BOUNDARY l a WORD_BOUNDARY p i s s i n a WORD_BOUNDARY β a WORD_BOUNDARY a WORD_BOUNDARY l a WORD_BOUNDARY p i s s i n a WORD_BOUNDARY
a WORD_BOUNDARY l a WORD_BOUNDARY p i s c i n a WORD_BOUNDARY v a WORD_BOUNDARY a WORD_BOUNDARY l a WORD_BOUNDARY p i s c i n a WORD_BOUNDARY . WORD_BOUNDARY