# A072001 (b-file synthesized from sequence entry)
1 1
2 11
3 101
4 111
5 201
6 211
7 1001
8 1011
9 1101
10 1111
11 1201
12 1211
13 2001
14 2011
15 2101
16 2111
17 2201
18 2211
19 3001
20 3011
21 3101
22 3111
23 3201
24 3211
25 10001
26 10011
27 10101
28 10111
29 10201
30 10211
31 11001
32 11011
33 11101
34 11111
35 11201
36 11211
37 12001
38 12011
39 12101
40 12111