new D ∧ B → ((B ∨ C → C) → (B → (A → ((E → C ∧ B) → (B → (C → (D → (E ∨ (A ∨ G)) ∧ ((G → C) ∨ (E ∨ C)))) ∨ ((E ∨ E) ∨ (D ∨ C)))))))
intro
cases 0
intro
intro
intro
intro
intro
cases 0
left
intro
cases 0
intro
cases 0
constructor
right
left
exact 5
left
intro
cases 0
exact 10