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.
Let x5 of type ο be given.
Let x6 of type ο be given.
Let x7 of type ο be given.
Assume H0: x0.
Assume H1: x1.
Assume H2: x2.
Assume H3: x3.
Assume H4: x4.
Assume H5: x5.
Assume H6: x6.
Assume H7: x7.
Apply and7I with
and x0 x1,
x2,
x3,
x4,
x5,
x6,
x7 leaving 7 subgoals.
Apply andI with
x0,
x1 leaving 2 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 H3.
The subproof is completed by applying H4.
The subproof is completed by applying H5.
The subproof is completed by applying H6.
The subproof is completed by applying H7.