def xl
import bend-osdev-gf@0.1.1.0/PROOF.bend as PROOFimport Base
import bend-osdev-gf@0.1.1.0/gf.bend as G
515def xl(vs: List<&2, G.Gf8Bits>, +p: G.Gf8Bits) -> List<&2, G.Gf8Bits>:
516 match vs:
517 case Nil{}:
518 Nil{}
519 case Con{+v, +vr}:
520 Con{G.Gf8Bits.x(v, p), xl(vr, p)}