Let x0 of type ι be given.
Let x1 of type ι be given.
Let x2 of type ι be given.
Let x3 of type ι be given.
Apply andI with
x0 = x2,
x1 = x3 leaving 2 subgoals.
Apply unknownprop_e73f096b39e613432d5ff91b0cce7f0415933a814878e30751219099fbe70d38 with
x0,
x1,
x2,
x3.
The subproof is completed by applying H0.
Apply unknownprop_cd9b819c01ae4998a4cf65dd883c26c9309128b38ec8f4ad6c1f823e8e086503 with
x0,
x1,
x2,
x3.
The subproof is completed by applying H0.