0

1

000

1

1

001

2

2

002, 011

3

3

003, 012, 111

4

4

004, 013, 022, 112

5

5

005, 014, 023, 113, 122

6

7

006, 015, 024, 033, 114, 123, 222

7

8

007, 016, 025, 034, 115, 124, 133, 223

8

10

008, 017, 026, 035, 044, 116, 125, 134, 224, 233

9

12

009, 018, 027, 036, 045, 117, 126, 135, 144, 225, 234, 333

10

13

019, 028, 037, 046, 055, 118, 127, 136, 145, 226, 235, 244, 334

11

14

029, 038, 047, 056, 119, 128, 137, 146, 155, 227, 236, 245, 335, 344

12

15

039, 048, 057, 066, 129, 138, 147, 156, 228, 237, 246, 255, 336, 345, 444

13

15

049, 058, 067, 139, 148, 157, 166, 229, 238, 247, 256, 337, 346, 355, 445

14

15

059, 068, 077, 149, 158, 167, 239, 248, 257, 266, 338, 347, 356, 446, 455

15

15

069, 078, 159, 168, 177, 249, 258, 267, 339, 348, 357, 366, 447, 456, 555

16

14

079, 088, 169, 178, 259, 268, 277, 349, 358, 367, 448, 457, 466, 556

17

13

089, 179, 188, 269, 278, 359, 368, 377, 449, 458, 467, 557, 566

18

12

099, 189, 279, 288, 369, 378, 459, 468, 477, 558, 567, 666

19

10

199, 289, 379, 388, 469, 478, 559, 568, 577, 667

20

8

299, 389, 479, 488, 569, 578, 668, 677

21

7

399, 489, 579, 588, 669, 678, 777

22

5

499, 589, 679, 688, 778

23

4

599, 689, 779, 788

24

3

699, 789, 888

25

2

799, 889

26

1

899

27

1

999