def rls.c0b
import bend-kit-collections@0.1.4.1/nat_order.bend as NatOrderimport Base
291def rls.c0b(+l: Nat, +a: Nat, +b: Nat, h2: LE(b, Nat.mul(3n, a)), h3: LE(1n+Nat.mul(3n, l), Nat.add(a, b))) -> LE(l, Nat.mul(3n, a)):
292 by_contra(l, Nat.mul(3n, a), ng => rls.c0b.k(l, a, b, ng, h2, h3))