na yfana pwy wnaeth
na yfana pwy wnaeth ?
n a WORD_BOUNDARY ʌ v a n a WORD_BOUNDARY p uɨ WORD_BOUNDARY ʊ n ɑɨ θ WORD_BOUNDARY
n a WORD_BOUNDARY y f a n a WORD_BOUNDARY p w y WORD_BOUNDARY w n a e t h WORD_BOUNDARY