(VAR X X1 X2 X3)
(RULES 
a__a -> a__c
a__b -> a__c
a__c -> e
a__k -> l
a__d -> m
a__a -> a__d
a__b -> a__d
a__c -> l
a__k -> m
a__A -> a__h(a__f(a__a),a__f(a__b))
a__h(X,X) -> a__g(mark(X),mark(X),a__f(a__k))
a__g(d,X,X) -> a__A
a__f(X) -> a__z(mark(X),X)
a__z(e,X) -> mark(X)
mark(A) -> a__A
mark(a) -> a__a
mark(b) -> a__b
mark(c) -> a__c
mark(d) -> a__d
mark(k) -> a__k
mark(z(X1,X2)) -> a__z(mark(X1),X2)
mark(f(X)) -> a__f(mark(X))
mark(h(X1,X2)) -> a__h(mark(X1),mark(X2))
mark(g(X1,X2,X3)) -> a__g(mark(X1),mark(X2),mark(X3))
mark(e) -> e
mark(l) -> l
mark(m) -> m
a__A -> A
a__a -> a
a__b -> b
a__c -> c
a__d -> d
a__k -> k
a__z(X1,X2) -> z(X1,X2)
a__f(X) -> f(X)
a__h(X1,X2) -> h(X1,X2)
a__g(X1,X2,X3) -> g(X1,X2,X3))