World = { HeaderWorld ~ NEWLINE+ ~ Robot+ }
HeaderWorld = { ASCII_DIGIT+ ~ " " ~ ASCII_DIGIT+ }
Robot = { HeaderRobot ~ NEWLINE ~ Instructions ~ NEWLINE+ }
HeaderRobot = { ASCII_DIGIT+ ~ " " ~ ASCII_DIGIT+ ~ " " ~ ("S" | "N" | "W" | "E") }
Instructions = { (("F" | "L" | "R")+) | "" }