Let x0 of type ι → (ι → ο) → ο be given.
Let x1 of type ι → (ι → ο) → ο be given.
Let x2 of type ι be given.
Apply DescrR_i_io_12 with
ced99.. x0 x1.
Apply unknownprop_5c4ccf8655ac1c709da38c3d1f61f18da76ac117b3319b22bdde5537970f0904 with
x0,
x1,
x2 leaving 4 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying H1.
The subproof is completed by applying H2.
The subproof is completed by applying H3.