18 3
0 0 2 1
0 0 3 2
0 0 5 1
0 0 5 2
0 1 6 1
0 1 6 2
0 1 6 5
0 1 7 4
0 1 8 2
0 1 8 5
0 1 9 2
0 1 10 4
0 2 6 5
0 2 8 3
0 2 8 4
0 2 8 5
0 2 9 2
0 2 10 1
0 2 10 3
0 3 7 2
0 3 7 4
0 3 8 3
0 3 8 4
0 3 9 1
0 3 9 3
0 3 10 1
0 4 6 3
0 4 7 2
0 4 7 4
0 4 7 5
0 4 9 3
0 4 10 3
0 4 10 5
0 5 6 4
0 5 7 1
0 5 9 5
0 5 10 1
0 5 10 3
6 6 6 9
6 6 7 7
6 6 7 10
6 6 9 7
6 7 9 10
6 9 7 7
6 9 8 7
6 10 7 9
6 10 9 8
7 7 8 9
7 8 8 9
7 10 10 9
8 8 8 10
8 8 9 10
8 8 10 9
8 10 9 9