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