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Proofgold Proof

pf
Let x0 of type ι be given.
Let x1 of type ιι be given.
Assume H0: ∀ x2 . x2x0x1 x2x0.
Let x2 of type ιο be given.
Let x3 of type ι be given.
Assume H1: x3x0.
Let x4 of type ιο be given.
Assume H2: ∀ x5 . ∀ x6 : ι → ι . (∀ x7 . x7x5x6 x7x5)∀ x7 : ι → ο . ∀ x8 . x8x5x4 (pack_u_p_e x5 x6 x7 x8).
Apply H2 with x0, x1, x2, x3 leaving 2 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying H1.