∀ {F : Type u₀ → Type u₁ → Type u₂} {inst : Bifunctor F} [self : LawfulBifunctor F] {α₀ α₁ α₂ : Type u₀}
  {β₀ β₁ β₂ : Type u₁} (f : α₀ → α₁) (f' : α₁ → α₂) (g : β₀ → β₁) (g' : β₁ → β₂),
  bimap f' g' ∘ bimap f g = bimap (f' ∘ f) (g' ∘ g)