Let x0 of type ι be given.
Let x1 of type ι → ι → ι be given.
Let x2 of type ι → ο be given.
Let x3 of type ι be given.
Let x4 of type ι be given.
Apply unknownprop_3f08132edb1093d24c4a0d63159ce8ca70d99f08a806bb2b1d9a51014b0c1c2e with
59e44.. x0 x1 x2 x3 x4,
x0,
x1,
x2,
x3,
x4.
Let x5 of type ι → ι → ο be given.
The subproof is completed by applying H0.