new F ∧ A → ((F → C) → ((B ∧ B) ∧ (G → B) → (C ∨ H → ((F ∨ A → H) → (A ∧ H → (A → (((H → (G → D)) → ((F → A) ∨ (D ∨ G)) ∨ ((E → H) ∨ (E → B))) → (D ∨ E → (H → E ∨ F)))))))))
intro
cases 0
intro
intro
cases 4
intro
intro
intro
cases 9
intro
cases 0
cases 4
cases 5
cases 9
cases 15
intro
cases 0
cases 4
cases 5
cases 9
cases 15
cases 26
intro
cases 0
cases 4
cases 5
cases 9
cases 15
cases 26
cases 39
intro
cases 0
cases 4
cases 5
cases 9
cases 15
cases 26
cases 39
cases 54
right
exact 1