quién canta Cumpleaños_Feliz
quién canta cumpleaños feliz ?
k j e n WORD_BOUNDARY k a n t a WORD_BOUNDARY k u m p l e a ɲ o s WORD_BOUNDARY f e l i θ WORD_BOUNDARY
q u i é n WORD_BOUNDARY c a n t a WORD_BOUNDARY c u m p l e a ñ o s WORD_BOUNDARY f e l i z WORD_BOUNDARY