0- [1t] t t t t-y- [3r] r r r y-t- [1r]-e---- 0- [!e] e e e e-E- w w w w E-e- [2w]-q---- q- [30]-W-W-r- r---q- [10]-e-e-t- t---e- [2w]-r-r-y- y---t y [1u]---y t [3r]---- 0-[1t] t t t t- y-[3r] r r r y- t-[1r]-e---- 0- [!e] e e e e- E-w w w w E- e-[2w]-q---- q- [30]-W-W- r-r--- q-[10]-e-e- t-t--- e-[2w]-r-r- y-y--- t y [1u]--- y t [3r]---- [!T]--0 - 0 T-y T r- e-[3r]--0---- y-- 0 - 0 y-u y T- r-[!T]--- y T [3r]---- [!T]--0 - 0 T-y T r- e-[3r]--0---- [2y]--q - q [3y]-u y T- r-[!T]--- y T [3r]--- t r [1e]