new ((C → A) → C) → (A → (F ∨ E → (((E → E) ∧ (C ∧ C) → (G → G) ∧ B) → (C → G) ∧ B ∨ ((F → (C → D)) → C))))
intro
intro
intro
intro
right
intro
apply 0
intro
exact 1