def rls.c1b
import bend-kit-collections@0.1.4.1/nat_order.bend as NatOrderimport Base
326def rls.c1b(+l: Nat, +a: Nat, +b: Nat, h3: LE(1n+Nat.mul(3n, l), Nat.add(a, b)), hs: LE(1n+a, Nat.mul(2n, b))) -> LE(Nat.add(l, a), Nat.mul(3n, b)):
327 by_contra(Nat.add(l, a), Nat.mul(3n, b), ng => rls.c1b.k(l, a, b, ng, h3, hs))