# A207968 (b-file synthesized from sequence entry) 1 10 2 11 3 12 4 20 5 21 6 22 7 101 8 102 9 111 10 112 11 122 12 201 13 202 14 211 15 212 16 221 17 222 18 1002 19 1011 20 1021 21 1022 22 1101 23 1102 24 1112 25 1121 26 1201 27 1202 28 1211 29 1222 30 2001 31 2011 32 2012 33 2021 34 2022 35 2102 36 2111 37 2122 38 2201 39 2202 40 2212 41 2221 42 10001 43 10002 44 10011