Apply unknownprop_f8517820c41e80abae5090668a4d7f9c31465f066f11281cc9990a74d008bfa1 with
λ x0 : ι → ι . λ x1 . x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 (x0 x1))))))))))).
The subproof is completed by applying unknownprop_e8e6d5cd52803fa78978937f5cadf0b90ae1da5571c1821cbca428bd99b61202.