Apply and3I with
a9626.. = a9626..,
64789.. 17d4e..,
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_8900aa9bfe05afa1f40e588aae88d401cf7435714fee66a8f40d56c6b91d7640.
The subproof is completed by applying unknownprop_50153708351b89ea01fe4eeffb39103b18c856cd6a2295bdffe9b6a1af51ccc1.