(STRATEGY
    INNERMOST)

(VAR
    N X X1 X2 XS)
(DATATYPES
    A = µX.< cons(X, X), from(X), s(X), 0, after(X, X) >)
(SIGNATURES
    a__from :: [A] -> A
    a__after :: [A x A] -> A
    mark :: [A] -> A)
(RULES
    a__from(X) -> cons(mark(X)
                      ,from(s(X)))
    a__after(0(),XS) -> mark(XS)
    a__after(s(N),cons(X,XS)) ->
      a__after(mark(N),mark(XS))
    mark(from(X)) ->
      a__from(mark(X))
    mark(after(X1,X2)) ->
      a__after(mark(X1),mark(X2))
    mark(cons(X1,X2)) ->
      cons(mark(X1),X2)
    mark(s(X)) -> s(mark(X))
    mark(0()) -> 0()
    a__from(X) -> from(X)
    a__after(X1,X2) -> after(X1,X2))