Let x0 of type ι be given.
Let x1 of type (ι → ο) → ο be given.
Let x2 of type ι → ι → ο be given.
Apply unknownprop_7314bca8a30c0998dc763c54947b8c824ba069a658faf1b9b22286c52611c7c4 with
36e8b.. x0 x1 x2,
x0,
x1,
x2.
Let x3 of type ι → ι → ο be given.
The subproof is completed by applying H0.