0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,
19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0,
9,12,5,13,15,6,19,1,0,11,17,14,2,3,18,4,10,16,8,7,
7,8,16,10,4,18,3,2,14,17,11,0,1,19,6,15,13,5,12,9,
10,1,6,15,2,17,18,12,19,4,7,13,8,16,0,5,3,9,14,11,
11,14,9,3,5,0,16,8,13,7,4,19,12,18,17,2,15,6,1,10,
18,4,5,14,8,1,15,10,16,19,9,0,17,3,2,12,13,11,6,7,
7,6,11,13,12,2,3,17,0,9,19,16,10,15,1,8,14,5,4,18,
14,4,15,3,2,13,9,16,18,12,1,0,7,10,11,5,6,8,19,17,
17,19,8,6,5,11,10,7,0,1,12,18,16,9,13,2,3,15,4,14,
0,13,1,17,5,16,4,7,15,2,14,19,6,9,11,10,3,18,8,12,
12,8,18,3,10,11,9,6,19,14,2,15,7,4,16,5,17,1,13,0,
15,4,0,6,5,19,16,7,8,3,12,18,13,10,1,2,17,9,11,14,
14,11,9,17,2,1,10,13,18,12,3,8,7,16,19,5,6,0,4,15,
17,2,7,9,10,14,15,8,4,5,6,1,11,19,18,12,0,13,16,3,
3,16,13,0,12,18,19,11,1,6,5,4,8,15,14,10,9,7,2,17,
9,18,10,11,5,7,4,16,15,1,12,2,3,0,17,14,8,13,19,6,
6,19,13,8,14,17,0,3,2,12,1,15,16,4,7,5,11,10,18,9,
7,8,17,19,0,5,14,10,4,15,18,9,12,6,16,13,11,3,1,2,
2,1,3,11,13,16,6,12,9,18,15,4,10,14,5,0,19,17,8,7,
19,18,3,16,11,2,6,1,0,14,9,8,17,4,7,13,12,5,10,15,
15,10,5,12,13,7,4,17,8,9,14,0,1,6,2,11,16,3,18,19,