def rhs.c0b
import bend-kit-collections@0.1.4.1/nat_order.bend as NatOrderimport Base
361def rhs.c0b(+l: Nat, +a: Nat, +b: Nat, h2: LE(b, Nat.mul(3n, a))) -> LE(b, Nat.mul(3n, Nat.add(a, l))):
362 by_contra(b, Nat.mul(3n, Nat.add(a, l)), ng => rhs.c0b.k(l, a, b, ng, h2))