(motive : Option (List Lean.MVarId) → Sort u_1) →
  (__do_lift : Option (List Lean.MVarId)) →
    ((g₁ g₂ : Lean.MVarId) → motive (some [g₁, g₂])) → ((x : Option (List Lean.MVarId)) → motive x) → motive __do_lift