ProofZb.allz: def of lawful-words@0.1.0.0
Import: import lawful-words@0.1.0.0/proof_zb.bend as ProofZb
Lines 11-19 of lawful-words@0.1.0.0/proof_zb.bend: https://jend.leeeet.dev/read.txt?path=lawful-words@0.1.0.0/proof_zb.bend&start_line=11&end_line=19

import Base

# All bits clear.
def allz(n: Nat, w: Word(n)) -> Bool:
  match n:
    case 0n:
      True{}
    case 1n+p:
      match w:
        case WCon{b, t}:
          Bool.and(Bool.not(b), allz(p, t))

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word.Con