MAYBE MAYBE TRS: { h(0(), X) -> f(0(), X, X), f(0(), 1(), X) -> h(X, X), g(X, Y) -> X, g(X, Y) -> Y } DUP: We consider a duplicating system. Trs: { h(0(), X) -> f(0(), X, X), f(0(), 1(), X) -> h(X, X), g(X, Y) -> X, g(X, Y) -> Y } Fail