Let x0 of type ι → (ι → ο) → ο be given.
Let x1 of type ι → (ι → ο) → ο be given.
Let x2 of type ι be given.
Apply unknownprop_6419f8fc1ff70ca950cf4e79a0f0cff9b9f9b876ea55c76aec20f2ed9adc5971 with
x0,
x1,
x2,
ordinal (7b9f3.. x0 x1) leaving 5 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying H1.
The subproof is completed by applying H2.
The subproof is completed by applying H3.
Apply H4 with
ordinal (7b9f3.. x0 x1).
The subproof is completed by applying H6.