al río se ha caído
a río se habe cae
prepart n pro:refl aux part
al río se ha caído ?
a l WORD_BOUNDARY r i o WORD_BOUNDARY s e WORD_BOUNDARY a WORD_BOUNDARY k a i ð o WORD_BOUNDARY
a l WORD_BOUNDARY r í o WORD_BOUNDARY s e WORD_BOUNDARY h a WORD_BOUNDARY c a í d o WORD_BOUNDARY