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 x1))))))))))))))).
The subproof is completed by applying unknownprop_7e53aa3740bca8a41f4e3f030a672ac7ce727b68c9f03a254f28bf1249178602.