0;  0,  0
0; 13, 16
0; 18, 25
0; 22,  2
0; 24, 50
0; 27,  9
0; 29,  0
0; 30, 30
0; 31, 56
0; 32, 37
0; 33, 56
0; 33, 44
0; 33, 48