Let x0 of type ι be given.
Let x1 of type ι be given.
Apply unknownprop_ee5e0fe730eedc37f764400300b0ed7a640b3bede985cf7ccb67403eb532be1a with
u17_to_Church17_buggy x1,
u17_to_Church17_buggy x0,
λ x2 x3 : ι → ι → ι . x3 = λ x4 x5 . x4 leaving 3 subgoals.
Apply H0 with
x1.
The subproof is completed by applying H2.
Apply H0 with
x0.
The subproof is completed by applying H3.
Apply H1 leaving 2 subgoals.
The subproof is completed by applying H3.
The subproof is completed by applying H2.