{α₂ β : Type u_1} →
  {m : Type u_1 → Type u_2} →
    (motive : Option (Std.IterM m β) → Sort u_3) →
      (it₂ : Option (Std.IterM m β)) → (Unit → motive none) → ((it₂ : Std.IterM m β) → motive (some it₂)) → motive it₂