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 H4.
Apply unknownprop_e965020877de1572e3db7225f6e8e02cfdbb951b9add60ee17a78d890a36e854 with
x2,
x3,
x0,
x1 leaving 5 subgoals.
The subproof is completed by applying H2.
The subproof is completed by applying H3.
The subproof is completed by applying H0.
The subproof is completed by applying H1.
The subproof is completed by applying H5.