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b7c7484 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | new (G → D ∧ A) → (((G → A) → A) → (E ∧ H → (F ∧ E → ((C ∨ E → F) → (((H → G) → F) → ((D → H ∧ A) → (F → (B → A)) ∧ E ∨ ((A → E) ∨ (F ∨ G)))))))) intro intro intro cases 2 intro cases 5 intro intro intro cases 2 cases 5 right left intro cases 2 cases 5 exact 3 |