Let x0 of type ι be given.
Let x1 of type ι be given.
Apply H0 with
λ x2 . struct_r (3fa3a.. x2 x1).
Let x2 of type ι be given.
Let x3 of type ι → ι → ο be given.
Apply H1 with
λ x4 . struct_r (3fa3a.. (pack_r x2 x3) x4).
Let x4 of type ι be given.
Let x5 of type ι → ι → ο be given.
Apply unknownprop_2b21d9fc231c558646c467d14a820e3bc5f0cce785ca7db2a0cb0c92dadc07f5 with
x2,
x3,
x4,
x5,
λ x6 x7 . struct_r x7.