Apply unknownprop_ce9033a67ef84c6ab0b67c7e947b752573b6048f7ffe5e81030bc8cffa5f9d29 with
4ae4a.. (4ae4a.. (4ae4a.. 4a7ef..)),
4ae4a.. 4a7ef...
The subproof is completed by applying unknownprop_660d518b3f18494e3056984097a0917e4ddb34b7d7ca0e50c6808ad2c4676ba8.