u u u i u-y- u - r y-t- t t t y t-r- u - r t-- u u u i u-y- o - y i-u- t t t y t-r- u - W e-- u u u i u-y- u - r y-t- t t t y t-r- u - r t-- u u u i u-y- o - y i-u- t t t y t-r- u-W-e - u s s s s s-i i a a a a a-u u p p p p p-y p p O s a u - u s s s s s-i i a a a a a-u u p p p p p-p p p-O-p