Let x0 of type ι be given.
Let x1 of type ι → ι → ο be given.
Let x2 of type ι → ι → ο be given.
Apply unknownprop_7829c7072f7b82636365dd8668615c4189e08d70448f5f51662bcd7af6e62d2d with
08354.. x0 x1 x2,
x0,
x1,
x2.
Let x3 of type ι → ι → ο be given.
The subproof is completed by applying H0.