new G ∨ A → (((H → A) → E) → (((I → D) → C) → (B ∧ I → ((A → I) → ((G → C) → (C → ((C → J ∧ J) → (B → E) ∨ I)))))))
intro
intro
intro
intro
cases 3
intro
intro
intro
intro
cases 3
right
exact 5