u-u u y u t-t t-e [wu]-w w e r t-t t-u o-o o i o u-u u-t [ro]-r r t y u i o u- a s - f - s a p a-s s - o - s d f d-s s - f - s a p o-i u - y - t--- t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t