1970
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2 --- --- --- 1 --- 1 1 1 1 1 --- ---
3 --- --- 1 1 1 --- 1 1 1 --- --- 1
4 1 --- 1 --- --- 1 1 1 1 --- --- ---
5 1 1 --- 1 --- 1 1 1 1 --- --- 1
6 --- --- 1 --- --- 1 1 1 1 --- --- 1
7 --- --- 1 1 1 1 1 1 1 --- --- 1
8 --- 1 1 1 --- 1 1 1 --- --- --- 1
9 --- --- --- --- 1 1 1 1 1 --- --- ---
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12 --- --- 1 --- 1 1 1 1 1 1 1 1
13 1 --- --- --- 1 1 1 --- 1 1 1 ---
14 1 --- --- 1 --- 1 1 1 1 1 1 ---
15 --- 1 1 1,2 --- 1 1 1 1 1 1 ---
16 1 --- 1 --- --- 1 1 --- 1 1 --- ---
17 1 --- --- --- 1 1 1 1 1 1 --- ---
18 --- --- --- --- --- 1 1 1 1 1 --- ---
19 --- --- 1 --- --- 1 --- 1 1 1 --- 1
20 --- 1 1 --- 1 --- --- 1 1 1 --- ---
21 --- --- --- 1 1 1 1 1 1 1 --- 1
22 --- 1 --- 1 --- 1 1 1 --- 1 --- ---
23 --- 1,2 --- 1 1 1 1 1 1 1 --- 1
24 --- --- 1 1 --- 1 1 1 1 1 --- ---
25 --- --- 1 1 1 1 1 --- --- 1 --- ---
26 --- --- --- 1 --- 1 1 --- 1 1 1 1
27 --- 1 1 1 --- 1 1 1 --- --- 1 ---
28 --- --- --- 1 1 1 1 1 1 --- --- ---
29 ---   --- 1 1 --- 1 1 1 1 --- ---
30 ---   --- 1 1 1 1 1 1 --- 1 ---
31 ---   1   1,2   1 1   ---   ---