The following practice problem has been generated for you:
Determine each cross-partition for:
[{1,11,12},{10,8,15},{4,7,16}][{1,11,12},{10,8,15},{4,7,16},{10,11,6},{10,19}][{1,11,12},{10,8,15},{4,7,16},{10,11,6},{10,19},{17,14},{1,12}][{1,11,12},{10,8,15},{4,7,16},{10,11,6},{10,19},{17,14},{1,12},{15,12},{19,7,18}]