Apply and3I with
caa86.. = caa86..,
64789.. 79919..,
64789.. 5d5d8.. leaving 3 subgoals.
Let x0 of type (CT2 (CT2 (ι → ι → ι))) → (CT2 (CT2 (ι → ι → ι))) → ο be given.
The subproof is completed by applying H0.
The subproof is completed by applying unknownprop_4237e1db3b44c4a64571a1c1c32c1feb5b80ca5727ff1508690c3893d070c688.
The subproof is completed by applying unknownprop_50153708351b89ea01fe4eeffb39103b18c856cd6a2295bdffe9b6a1af51ccc1.