Let x0 of type ι be given.
Let x1 of type ι be given.
Let x2 of type ι be given.
Apply unknownprop_b7caf5f70ae79c72282a4433b7742206b9e82c71b0701b7f8019ceccbdfb80a7 with
x0,
x1,
099f3.. (bc82c.. x0 x1) (bc82c.. x0 x2) leaving 3 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying H1.