⊦ P0(H0) ∧ P1(H1) ∧ H0 ⊥ H1 → ((P0 * P1))(H0 ∪ H1)
((P0 * (P0 -* P1)))(H1), P2(H0), H1 ⊥ H0 ⊦ ((P1 * P2))(H1 ∪ H0), P1(H1) ∧ P2(H0) ∧ H1 ⊥ H0
Used terms: H0, H1, P2, P1