Let x0 of type ο be given.
Let x1 of type ο be given.
Let x2 of type ο be given.
Let x3 of type ο be given.
Let x4 of type ο be given.
Assume H0: x1.
Apply unknownprop_7c688f24c3595bc4b513e911d7f551c8ccfedc804a6c15c02d25d01a2996aec6 with
or (or (or x0 x1) x2) x3,
x4.
Apply unknownprop_0f81bab128abc6e997fc91d09d9de1ede0e8a92031284f9136d8f141b19b5bdd with
x0,
x1,
x2,
x3.
The subproof is completed by applying H0.