def rhs.c1a
import bend-kit-collections@0.1.4.1/nat_order.bend as NatOrderimport Base
382def rhs.c1a(+l: Nat, +a: Nat, +b: Nat, h2: LE(b, Nat.mul(3n, a)), h3: LE(1n+Nat.mul(3n, l), Nat.add(b, a))) -> LE(l, Nat.mul(3n, a)):
383 by_contra(l, Nat.mul(3n, a), ng => rhs.c1a.k(l, a, b, ng, h2, h3))