new F ∧ H → ((H ∨ I → B) → (I → (I ∧ D → (F → ((J → E) → (((C → F) → A) → (D → (B → (F ∧ J → (G → E ∧ (H ∧ G)))))))))))
intro
cases 0
intro
intro
intro
cases 5
intro
intro
intro
intro
cases 0
cases 5
intro
cases 0
cases 5
intro
cases 21
cases 0
cases 5
cases 21
intro
cases 0
cases 5
cases 21
constructor
apply 9
exact 23
constructor
exact 2
exact 30