Apply unknownprop_f8517820c41e80abae5090668a4d7f9c31465f066f11281cc9990a74d008bfa1 with
λ x0 : ι → ι . λ x1 . x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 x1))))))))))))))))).
The subproof is completed by applying unknownprop_3392c7cde6ec762e870dfa5fcd6723ccfa166404324c82cc233cb752921f6a90.