Apply unknownprop_4c4b27a97d7f3e81d4abb7629b850d6c55c186f55f30e3dfae132a3ddf1e0a30 with
4ae4a.. (4ae4a.. (4ae4a.. (4ae4a.. 4a7ef..))),
4ae4a.. 4a7ef...
The subproof is completed by applying unknownprop_9ec656cf0d83e7858e314f8d14d34003f98b73077d45230a446ec386d304d5f4.