vamos a ver o libro
vamos a ver o libro .
b a m o s WORD_BOUNDARY a WORD_BOUNDARY β e ɾ WORD_BOUNDARY o WORD_BOUNDARY l i β ɾ o WORD_BOUNDARY
v a m o s WORD_BOUNDARY a WORD_BOUNDARY v e r WORD_BOUNDARY o WORD_BOUNDARY l i b r o WORD_BOUNDARY