0 w [tu] [tu]-[tu] - 0 w [tu] [tu]-[tu] - r e r r---w w [eu]----I---- e w [eu]----I---- 0 0 w w w w-0 t e---- 0 0 w w - w 0-t e---e e [ry] r---r r t---t t y-y y y-i u y--y-[wu] w [uo] u---y t [ru] r---r r [et] e---t e [eu] - [wy] - w w [ey]---t-e [yu]--y t-r t---y t t t---- [uo] [yo] [to] i [ui] [yi] [uO] [uo] [TP] - Y - i- [os]