Let x0 of type ι be given.
Let x1 of type ι be given.
Let x2 of type ι be given.
Apply unknownprop_01b7f7993ff222473c0dc551f861729864a2fa847d49dc4751edad0602198144 with
x1,
x0,
x2 leaving 2 subgoals.
The subproof is completed by applying H0.
Apply unknownprop_1b764290fde7c6be5dad24a6a257b6d0c773613bb687261020b529743ed07853 with
x2,
x0.
The subproof is completed by applying H1.