.
Apply unknownprop_770505912c32dda2498a8aaf85f0c77fe9f674b5bdbb481b51987aa8ab664128 with
x0 leaving 6 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying H1.
The subproof is completed by applying H2.
The subproof is completed by applying H8.
The subproof is completed by applying H10.
The subproof is completed by applying H11.