<> <> <> <> <> <> <> <> << u D | u m>> << p o | l p>> << w | l t>> 1 0 0 | x x 0 0 0 | 0 1 0 0 0 | 0 1 <> 0 1 0 | 0 1 0 1 0 | 0 0 0 1 0 | 0 0 0 1 0 | 0 0 0 0 0 | 1 0 0 0 1 | 1 0 0 0 1 | 0 0 0 0 1 | 0 0 0 0 1 | 0 0 0 0 0 | 0 1 0 0 0 | 0 1 <> 0 1 0 | 0 1 -- empty 0 1 0 | 0 0 -- 1 0 0 1 | 0 0 -- 2 0 1 0 | 0 0 -- 1 0 1 0 | 0 0 -- 2 0 1 0 | 0 0 -- 3 0 0 1 | 1 0 -- 4 0 0 1 | 0 0 -- 3 0 0 1 | 0 0 -- 2 0 0 1 | 0 0 -- 1 0 0 1 | 0 1 -- 0 .