Let x0 of type ι be given.
Apply unknownprop_eb2dfcc61b297e9bd5334705d22ba206e3441f9f0cfc821c0488b814ec57c600 with
4ae4a.. (e4431.. x0),
7cb9a.. x0 leaving 2 subgoals.
Apply unknownprop_1f03c3e4cc230143731a84d6351b78522f6051d5113f644774435abf9cb5a984 with
e4431.. x0.
Apply unknownprop_afbf697e4489c80654ae2bc4c6605f6f1d2a8b7dcfe3f07863a96592ab5c88f5 with
x0.
The subproof is completed by applying H0.
Apply unknownprop_3c74aa848f55be564f01c8dd0ff59eee2659931bdcc1928737742e3eb3feffd2 with
x0.
The subproof is completed by applying H0.