Let x0 of type ι be given.
Let x1 of type ι be given.
Let x2 of type ι be given.
Apply unknownprop_b30a94f49240f0717f4ecb200a605aa8a4e6dad6dc5d1afa60c37866ee96baab with
x2,
setminus x0 x1.
Apply unknownprop_8369708f37c0d20e10b6156293f1b207e835dfc563ff7fbfa059bf26c84ddb80 with
x2,
x0 leaving 2 subgoals.
The subproof is completed by applying H0.
Apply unknownprop_29bb348fa91dd336b68009f32eb9809a20ab7c7920c130047ad13aae3b335ac5 with
x0,
x1,
x2.
The subproof is completed by applying H1.