Let x0 of type ι be given.
Let x1 of type ι be given.
Let x2 of type ι → ι → ο be given.
Let x3 of type ι → ο be given.
Apply H0 with
λ x4 x5 . x1 = f482f.. x5 4a7ef...
Let x4 of type ι → ι → ο be given.
The subproof is completed by applying unknownprop_c6edfe304716447202fa4e847b9eb9d6f1ad651728e21f6781503da40cd9117f with
x1,
d2155.. x1 x2,
1216a.. x1 x3,
λ x5 x6 . x4 x6 x5.