(STRATEGY
    INNERMOST)

(VAR
    x y z)
(DATATYPES
    A = µX.< f(X), a >)
(SIGNATURES
    b :: [A x A] -> A
    c :: [A x A x A] -> A)
(RULES
    b(y,z) -> f(c(c(y,z,z),a(),a()))
    b(b(z,y),a()) -> z
    c(f(z),f(c(a(),x,a())),y) ->
      c(f(b(x,z)),c(z,y,a()),a()))