(VAR X Y Z X1 X2) (RULES active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z)) active(sel(0,cons(X,Z))) -> mark(X) active(first(0,Z)) -> mark(nil) active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z))) active(from(X)) -> mark(cons(X,from(s(X)))) active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z)) active(sel1(0,cons(X,Z))) -> mark(quote(X)) active(first1(0,Z)) -> mark(nil1) active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z))) active(quote(0)) -> mark(01) active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z))) active(quote1(nil)) -> mark(nil1) active(quote(s(X))) -> mark(s1(quote(X))) active(quote(sel(X,Z))) -> mark(sel1(X,Z)) active(quote1(first(X,Z))) -> mark(first1(X,Z)) active(unquote(01)) -> mark(0) active(unquote(s1(X))) -> mark(s(unquote(X))) active(unquote1(nil1)) -> mark(nil) active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z))) active(fcons(X,Z)) -> mark(cons(X,Z)) mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2))) mark(s(X)) -> active(s(mark(X))) mark(cons(X1,X2)) -> active(cons(mark(X1),X2)) mark(0) -> active(0) mark(first(X1,X2)) -> active(first(mark(X1),mark(X2))) mark(nil) -> active(nil) mark(from(X)) -> active(from(mark(X))) mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2))) mark(quote(X)) -> active(quote(X)) mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2))) mark(nil1) -> active(nil1) mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2))) mark(01) -> active(01) mark(quote1(X)) -> active(quote1(X)) mark(s1(X)) -> active(s1(mark(X))) mark(unquote(X)) -> active(unquote(mark(X))) mark(unquote1(X)) -> active(unquote1(mark(X))) mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2))) sel(mark(X1),X2) -> sel(X1,X2) sel(X1,mark(X2)) -> sel(X1,X2) sel(active(X1),X2) -> sel(X1,X2) sel(X1,active(X2)) -> sel(X1,X2) s(mark(X)) -> s(X) s(active(X)) -> s(X) cons(mark(X1),X2) -> cons(X1,X2) cons(X1,mark(X2)) -> cons(X1,X2) cons(active(X1),X2) -> cons(X1,X2) cons(X1,active(X2)) -> cons(X1,X2) first(mark(X1),X2) -> first(X1,X2) first(X1,mark(X2)) -> first(X1,X2) first(active(X1),X2) -> first(X1,X2) first(X1,active(X2)) -> first(X1,X2) from(mark(X)) -> from(X) from(active(X)) -> from(X) sel1(mark(X1),X2) -> sel1(X1,X2) sel1(X1,mark(X2)) -> sel1(X1,X2) sel1(active(X1),X2) -> sel1(X1,X2) sel1(X1,active(X2)) -> sel1(X1,X2) quote(mark(X)) -> quote(X) quote(active(X)) -> quote(X) first1(mark(X1),X2) -> first1(X1,X2) first1(X1,mark(X2)) -> first1(X1,X2) first1(active(X1),X2) -> first1(X1,X2) first1(X1,active(X2)) -> first1(X1,X2) cons1(mark(X1),X2) -> cons1(X1,X2) cons1(X1,mark(X2)) -> cons1(X1,X2) cons1(active(X1),X2) -> cons1(X1,X2) cons1(X1,active(X2)) -> cons1(X1,X2) quote1(mark(X)) -> quote1(X) quote1(active(X)) -> quote1(X) s1(mark(X)) -> s1(X) s1(active(X)) -> s1(X) unquote(mark(X)) -> unquote(X) unquote(active(X)) -> unquote(X) unquote1(mark(X)) -> unquote1(X) unquote1(active(X)) -> unquote1(X) fcons(mark(X1),X2) -> fcons(X1,X2) fcons(X1,mark(X2)) -> fcons(X1,X2) fcons(active(X1),X2) -> fcons(X1,X2) fcons(X1,active(X2)) -> fcons(X1,X2) )