# A125099 (b-file synthesized from sequence entry) 1 10 2 11 3 101 4 102 5 110 6 111 7 120 8 1000 9 1001 10 1002 11 1010 12 1011 13 1020 14 1021 15 1022 16 1100 17 1101 18 1110 19 1111 20 1112 21 1120 22 1121 23 1202 24 1210 25 1211 26 1212 27 1220 28 1221 29 1230 30 10001 31 10002 32 10010 33 10011 34 10020 35 10021 36 10022 37 10100 38 10101 39 10110 40 10111 41 10112