D1 = 1:2  1:3  2:3
D2 = 2:4  2:5  4:5
D3 = 3:4  3:6  4:6
D4 = 4:1  4:7  1:7
D5 = 5:1  5:6  1:6
D6 = 6:2  6:7  2:7
7 = 7:3  7:5  3:5
8 = 8:1  8:9  1:9
9 = 9:2  9:10  2:10
10 = 10:1  10:11  1:11
11 = 11:2  11:8  2:8
12 = 12:1  12:13  1:13
13 = 13:2  13:14  2:14
14 = 14:1  14:15  1:15
15 = 2:12  2:15  12:15
16 = 3:8  3:10  8:10
17 = 3:9  3:11  9:11
18 = 3:12  3:14  12:14
19 = 4:8  4:12  8:12
20 = 5:8  5:13  8:13
21 = 6:8  6:14  8:14
22 = 7:8  7:15  8:15
23 = 9:4  9:13  4:13
24 = 9:5  9:12  5:12
25 = 10:4  10:14  4:14
26 = 11:4  11:15  4:15
27 = 12:6  12:10  6:10
28 = 13:3  13:15  3:15
29 = 14:5  14:11  5:11
30 = 5:10  5:15  10:15
D31 = 6:9  6:15  9:15
D32 = 6:11  6:13  11:13
D33 = 7:9  7:14  9:14
D34 = 7:10  7:13  10:13
D35 = 7:11  7:12  11:12