19 3
0 0 1 2
0 0 3 4
0 0 3 6
0 0 4 1
0 1 7 5
0 1 7 6
0 1 8 1
0 1 8 3
0 1 10 3
0 1 10 4
0 2 7 5
0 2 8 5
0 2 8 6
0 2 9 3
0 2 10 1
0 2 11 2
0 2 11 6
0 3 8 1
0 3 10 3
0 3 10 5
0 3 11 2
0 3 11 4
0 4 8 1
0 4 8 2
0 4 8 6
0 4 10 4
0 4 11 3
0 4 11 5
0 5 7 4
0 5 9 2
0 5 9 3
0 5 9 4
0 5 9 6
0 5 10 4
0 6 7 1
0 6 7 2
0 6 7 5
0 6 8 3
0 6 9 2
0 6 11 1
7 7 7 10
7 7 8 10
7 7 10 8
7 7 10 11
7 7 11 8
7 8 9 11
7 9 11 11
7 10 9 9
7 11 11 8
8 8 8 9
8 9 9 11
8 9 11 10
8 10 10 10
8 11 9 9
8 11 11 10
9 9 9 10
9 10 11 10