(VAR X XS N Y YS X1 X2) (RULES from(X) -> cons(X,n__from(n__s(X))) sel(0,cons(X,XS)) -> X sel(s(N),cons(X,XS)) -> sel(N,activate(XS)) minus(X,0) -> 0 minus(s(X),s(Y)) -> minus(X,Y) quot(0,s(Y)) -> 0 quot(s(X),s(Y)) -> s(quot(minus(X,Y),s(Y))) zWquot(XS,nil) -> nil zWquot(nil,XS) -> nil zWquot(cons(X,XS),cons(Y,YS)) -> cons(quot(X,Y),n__zWquot(activate(XS),activate(YS))) from(X) -> n__from(X) s(X) -> n__s(X) zWquot(X1,X2) -> n__zWquot(X1,X2) activate(n__from(X)) -> from(activate(X)) activate(n__s(X)) -> s(activate(X)) activate(n__zWquot(X1,X2)) -> zWquot(activate(X1),activate(X2)) activate(X) -> X )