∀ {α : Type u_1} {β : Type u_2} {γ : Type u_3} [inst : Primcodable α] [inst_1 : Primcodable β] [inst_2 : Primcodable γ]
  {p : α → Prop} {q : β → Prop} {r : γ → Prop}, ManyOneEquiv p q → (ManyOneEquiv p r ↔ ManyOneEquiv q r)