fai caro caro al libretto
face caro a libro
fai caro caro al libretto .
f aː i WORD_BOUNDARY k a r o WORD_BOUNDARY k a r o WORD_BOUNDARY a l WORD_BOUNDARY l i b r e tː o WORD_BOUNDARY
f a i WORD_BOUNDARY c a r o WORD_BOUNDARY c a r o WORD_BOUNDARY a l WORD_BOUNDARY l i b r e t t o WORD_BOUNDARY