new C ∨ E → (A → (B → ((G → D) → (((E → C) → G) → ((C → E ∧ G) → (E ∧ B → ((E ∧ D) ∧ A → (F ∧ C → G ∧ F))))))))
intro
intro
intro
intro
intro
intro
intro
cases 6
cases 6
intro
cases 11
cases 6
cases 11
cases 12
cases 16
intro
cases 22
cases 6
cases 11
cases 12
cases 16
cases 22
cases 27
constructor
apply 4
intro
cases 6
cases 11
cases 12
cases 16
cases 22
cases 27
cases 40
exact 24
exact 23