Apply unknownprop_ce9033a67ef84c6ab0b67c7e947b752573b6048f7ffe5e81030bc8cffa5f9d29 with
4ae4a.. (4ae4a.. (4ae4a.. 4a7ef..)),
4a7ef...
The subproof is completed by applying unknownprop_39c68f59201a24e05d494df554b752ed6bfbdb14109c09811c3da46652b4b359.