Let x0 of type ι be given.
Apply unknownprop_dec2978c0a72cebd51fcab0a380f03d4d80d1ccd8f826d378953148c305a60f0 with
4ae4a.. 4a7ef..,
x0,
prim1 x0 (prim2 4a7ef.. (4ae4a.. 4a7ef..)) leaving 3 subgoals.
The subproof is completed by applying H0.
Apply unknownprop_30833a9978e304b25ffd59c347245315985872140acc9e441a97543a28184d79 with
4a7ef..,
x0.
Apply unknownprop_745f0ddae55929306ce167ef9bae0ede767961c0319e8b14305a55d5b24d73e4 with
x0.
The subproof is completed by applying H1.