YES TRS: a__f(f(X)) -> a__c(f(g(f(X)))) a__c(X) -> d(X) a__h(X) -> a__c(d(X)) mark(f(X)) -> a__f(mark(X)) mark(c(X)) -> a__c(X) mark(h(X)) -> a__h(mark(X)) mark(g(X)) -> g(X) mark(d(X)) -> d(X) a__f(X) -> f(X) a__c(X) -> c(X) a__h(X) -> h(X) linear polynomial interpretations on N: a__f_A(x1) = x1 + 1 a__f#_A(x1) = x1 + 1 f_A(x1) = x1 + 1 f#_A(x1) = x1 + 1 a__c_A(x1) = x1 a__c#_A(x1) = x1 g_A(x1) = x1 g#_A(x1) = x1 d_A(x1) = x1 d#_A(x1) = x1 a__h_A(x1) = x1 + 1 a__h#_A(x1) = x1 + 1 mark_A(x1) = x1 mark#_A(x1) = x1 c_A(x1) = x1 c#_A(x1) = x1 h_A(x1) = x1 + 1 h#_A(x1) = x1 + 1 precedence: g > mark > a__f = a__h > f = a__c = h > d = c