fact: Definition Level_66 := |> # # # # # # # # # # # # # <| |> # _ _ _ _ _ _ _ _ _ _ _ # <| |> # _ O X O X O X O X O _ # <| |> # _ X O X O X O X O X _ # <| |> # _ O X O X O X O X O _ # <| |> # _ X O X O X O X O X _ # <| +> # _ O X O X + X O X O _ # <| |> # _ X O X O X O X O X _ # <| |> # _ O X O X O X O X O _ # <| |> # _ X O X O X O X O X _ # <| |> # _ O X O X O X O X O _ # <| |> # _ _ _ _ _ _ _ _ _ _ _ # <| |> # # # # # # # # # # # # # <| |><| .