Let x0 of type ι be given.
Let x1 of type ι → ι → ο be given.
Let x2 of type ι → ο be given.
Apply unknownprop_1f359344490e0363259c5560846c4be14c7e4ce93693c5ab6f2c202488075878 with
42836.. x0 x1 x2,
x0,
x1,
x2.
Let x3 of type ι → ι → ο be given.
The subproof is completed by applying H0.