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Proofgold Proof

pf
Let x0 of type ι be given.
Assume H0: prim1 4a7ef.. x0.
Let x1 of type ι be given.
Let x2 of type ι be given.
Assume H1: Subq x1 x2.
Apply unknownprop_1a4eea2e7e2053f757a088192061db01d519464057770f62e2fa414ed5ef28ac with x1, x2, λ x3 . x0 leaving 2 subgoals.
The subproof is completed by applying H1.
Let x3 of type ι be given.
Assume H2: prim1 x3 x2.
Assume H3: nIn x3 x1.
The subproof is completed by applying H0.