YES (VAR x0 x) (RULES d(d(d(c(x0)))) -> d(d(d(d(x0)))) d(d(d(d(d(x))))) -> d(d(d(d(x)))) a(x) -> d(d(d(d(x)))) e(c(x)) -> d(d(d(d(e(x))))) b(x) -> d(d(x)) e(d(x)) -> d(d(d(d(e(x))))) c(c(x)) -> d(d(d(x))) c(d(x)) -> d(d(d(d(x)))) ) (COMMENT Termination is shown by LPO with precedence: c > e > b > a > d )