Let x0 of type ι be given.
Let x1 of type ι be given.
Apply unknownprop_7cfd5e4aadf2e8cb5956c30c3589cd3b6084bd1797b4cd3169e2a989d66e37fe with
x0,
x1.
Apply unknownprop_16a890d80e582f5663abfcfb5f5942164bae0e65476988fa667ed9ca882547fe with
SNoLev x0,
SNoLev x1,
λ x2 . In x2 x0,
λ x2 . In x2 x1 leaving 3 subgoals.
The subproof is completed by applying H0.
Apply unknownprop_b7c7a090ca47d83894301167c54772cc587bbb21de668c0b72273825ec0064b9 with
SNoLev x1,
x0,
x1.
The subproof is completed by applying H1.
Apply unknownprop_9bccc16873f624a3c3c071d170820d76e64a5491b15f0c2f0287b0026ecb19b8 with
SNoLev x1,
x0.
The subproof is completed by applying H2.