new E ∧ G → ((C ∨ A → J) → (C ∧ I → (J ∨ H → (B ∨ A → (B ∧ C → ((I → D ∧ F) → B))))))
intro
cases 0
intro
intro
cases 4
intro
intro
intro
cases 9
intro
cases 0
cases 4
cases 9
exact 10