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 (x0 (x0 (x0 (x0 x1))))))))))))))))))))).
The subproof is completed by applying unknownprop_cd2e82ef4221082a96ca4495b573c10f870eabc28fd174aa5eb72ee3150cae4b.