TRS: { a__zeros() -> cons(0(), zeros()), a__U11(tt(), L) -> a__U12(tt(), L), a__U12(tt(), L) -> s(a__length(mark(L))), a__U21(tt(), IL, M, N) -> a__U22(tt(), IL, M, N), a__U22(tt(), IL, M, N) -> a__U23(tt(), IL, M, N), a__U23(tt(), IL, M, N) -> cons(mark(N), take(M, IL)), a__length(nil()) -> 0(), a__length(cons(N, L)) -> a__U11(tt(), L), a__take(0(), IL) -> nil(), a__take(s(M), cons(N, IL)) -> a__U21(tt(), IL, M, N), mark(zeros()) -> a__zeros(), mark(U11(X1, X2)) -> a__U11(mark(X1), X2), mark(U12(X1, X2)) -> a__U12(mark(X1), X2), mark(length(X)) -> a__length(mark(X)), mark(U21(X1, X2, X3, X4)) -> a__U21(mark(X1), X2, X3, X4), mark(U22(X1, X2, X3, X4)) -> a__U22(mark(X1), X2, X3, X4), mark(U23(X1, X2, X3, X4)) -> a__U23(mark(X1), X2, X3, X4), mark(take(X1, X2)) -> a__take(mark(X1), mark(X2)), mark(cons(X1, X2)) -> cons(mark(X1), X2), mark(0()) -> 0(), mark(tt()) -> tt(), mark(s(X)) -> s(mark(X)), mark(nil()) -> nil(), a__zeros() -> zeros(), a__U11(X1, X2) -> U11(X1, X2), a__U12(X1, X2) -> U12(X1, X2), a__length(X) -> length(X), a__U21(X1, X2, X3, X4) -> U21(X1, X2, X3, X4), a__U22(X1, X2, X3, X4) -> U22(X1, X2, X3, X4), a__U23(X1, X2, X3, X4) -> U23(X1, X2, X3, X4), a__take(X1, X2) -> take(X1, X2)} Fail