0 QTRS
i(x, x) → i(a, b) g(x, x) → g(a, b) h(s(f(x))) → h(f(x)) f(s(x)) → s(s(f(h(s(x))))) f(g(s(x), y)) → f(g(x, s(y))) h(g(x, s(y))) → h(g(s(x), y)) h(i(x, y)) → i(i(c, h(h(y))), x) g(a, g(x, g(b, g(a, g(x, y))))) → g(a, g(a, g(a, g(x, g(b, g(b, y))))))