Test case 1
0 5 3 7
4 2 1 15
8 9 6 10
12 13 14 11

Test case 2
0 1 3 6
4 9 2 7
8 11 5 14
12 15 13 10

Test case 3
0 1 15 3
5 6 2 7
4 12 9 10
13 8 14 11

Test case 4
4 0 5 2
6 15 1 3
8 9 11 7
12 13 10 14

Test case 5
1 2 6 5
0 15 7 3
4 8 9 11
12 13 10 14