Let x0 of type ι be given.
Let x1 of type ι → ι → ι be given.
Let x2 of type ι be given.
Apply unknownprop_b8fca82ae3bd1ab42ec0b368c1d6f5c65c1d050470d779be27ba83e98b2e3ea8 with
96158.. x0 x1 x2,
x0,
x1,
x2.
Let x3 of type ι → ι → ο be given.
The subproof is completed by applying H0.