Apply unknownprop_dec2978c0a72cebd51fcab0a380f03d4d80d1ccd8f826d378953148c305a60f0 with
4a7ef..,
4ae4a.. (4ae4a.. 4a7ef..),
False leaving 3 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying unknownprop_da3368fefc81e401e6446c98c0c04ab87d76d6f97c47fe5fd07c1e3c2f00ef6a with
4ae4a.. (4ae4a.. 4a7ef..).
The subproof is completed by applying unknownprop_38b5b92bfd131ef0428a8ee212f746419349b56c1e9077ab24b3c25647caace1.