(VAR x1 )
(RULES 
        0(1(1(2(x1)))) -> 0(1(0(x1)))
        0(3(4(4(x1)))) -> 0(3(2(x1)))
        3(0(4(3(4(x1))))) -> 5(1(0(3(4(x1)))))
        3(1(1(1(4(x1))))) -> 3(2(0(4(x1))))
        3(3(1(2(2(1(x1)))))) -> 0(0(0(3(5(1(x1))))))
        4(1(4(0(0(3(x1)))))) -> 4(4(0(2(2(x1)))))
        2(4(3(5(4(3(1(x1))))))) -> 5(1(2(0(4(1(x1))))))
        5(2(2(0(1(3(4(x1))))))) -> 5(2(5(3(4(0(0(x1)))))))
        5(5(3(0(0(3(1(x1))))))) -> 5(4(4(1(4(2(3(x1)))))))
        0(5(1(0(3(1(3(3(x1)))))))) -> 3(3(4(2(5(3(3(x1)))))))
        1(2(2(2(4(5(3(0(3(0(x1)))))))))) -> 1(0(1(3(0(2(3(4(0(x1)))))))))
        4(3(5(2(1(0(4(0(2(5(x1)))))))))) -> 1(0(1(1(1(4(3(4(5(5(x1))))))))))
        1(4(3(3(5(1(0(5(4(4(5(x1))))))))))) -> 4(2(5(5(3(0(3(3(1(5(x1))))))))))
        2(1(4(3(4(5(4(0(2(0(0(3(x1)))))))))))) -> 3(2(4(1(5(2(5(2(1(1(1(x1)))))))))))
        3(2(3(3(2(4(2(4(2(4(0(1(x1)))))))))))) -> 2(0(3(0(3(0(0(0(2(2(0(1(x1))))))))))))
        4(1(5(3(4(4(2(4(4(5(2(4(x1)))))))))))) -> 4(3(5(3(1(0(0(4(5(4(4(x1)))))))))))
        0(2(0(4(0(4(2(4(4(3(5(2(5(x1))))))))))))) -> 0(1(5(4(0(1(5(3(4(3(3(5(x1))))))))))))
        3(3(5(3(2(0(4(5(2(4(0(3(2(2(x1)))))))))))))) -> 3(3(5(3(5(3(3(5(1(3(3(5(0(2(x1))))))))))))))
        1(4(2(5(5(0(1(3(1(0(1(0(1(2(2(3(x1)))))))))))))))) -> 2(2(4(1(1(0(1(0(1(4(4(5(2(1(3(1(3(x1)))))))))))))))))
        5(3(5(1(3(3(2(5(3(5(4(1(5(2(0(3(x1)))))))))))))))) -> 5(3(5(4(4(5(2(1(4(4(1(3(2(4(3(1(x1))))))))))))))))
        5(5(3(2(5(1(3(4(1(0(1(0(3(3(5(4(4(x1))))))))))))))))) -> 5(3(2(1(4(1(5(0(5(5(5(3(1(2(4(1(2(x1)))))))))))))))))
        0(3(4(4(5(4(4(5(0(1(5(5(5(5(0(3(3(1(x1)))))))))))))))))) -> 0(2(1(1(5(3(5(2(4(4(0(2(3(2(3(0(1(1(x1))))))))))))))))))
        3(5(0(3(5(4(2(5(3(4(2(3(3(4(2(5(0(0(x1)))))))))))))))))) -> 0(1(2(1(4(0(5(2(0(2(5(3(5(1(3(2(0(x1)))))))))))))))))
        0(3(4(1(2(4(5(1(3(2(2(1(3(1(5(5(1(5(0(x1))))))))))))))))))) -> 3(0(4(1(5(1(3(3(4(0(1(0(0(1(0(2(0(x1)))))))))))))))))
        2(4(2(1(1(4(3(2(1(1(4(4(0(3(3(4(1(5(3(4(x1)))))))))))))))))))) -> 0(2(5(5(3(2(3(3(5(3(0(0(0(0(3(2(1(3(2(x1)))))))))))))))))))
        
)