The following practice problem has been generated for you:
Determine each cross-partition for:
[{19,15},{2,15,13}][{19,15},{2,15,13},{9,12,14},{2,11,3}][{19,15},{2,15,13},{9,12,14},{2,11,3},{1,5,5},{7,7},{16,20,8}][{19,15},{2,15,13},{9,12,14},{2,11,3},{1,5,5},{7,7},{16,20,8},{5,8,2},{10,15}]