YES 1 decompositions #1 ----------- 1: H(F(x1,x2)) -> F(H(R(x1)),x2) 2: F(x3,K(x4,x5)) -> G(P(x4),Q(x5,x3)) 3: H(Q(x6,x7)) -> Q(x6,H(R(x7))) 4: Q(x8,H(R(x9))) -> H(Q(x8,x9)) 5: H(G(x10,x11)) -> G(x10,H(x11)) @Rule Labeling --- R 1: H(F(x1,x2)) -> F(H(R(x1)),x2) 2: F(x3,K(x4,x5)) -> G(P(x4),Q(x5,x3)) 3: H(Q(x6,x7)) -> Q(x6,H(R(x7))) 4: Q(x8,H(R(x9))) -> H(Q(x8,x9)) 5: H(G(x10,x11)) -> G(x10,H(x11)) --- S 1: H(F(x1,x2)) -> F(H(R(x1)),x2) 2: F(x3,K(x4,x5)) -> G(P(x4),Q(x5,x3)) 3: H(Q(x6,x7)) -> Q(x6,H(R(x7))) 4: Q(x8,H(R(x9))) -> H(Q(x8,x9)) 5: H(G(x10,x11)) -> G(x10,H(x11))