Tier 2
8967(9867) 9887(7988)

Tier 1
7799 1110 9696 2100

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Tier 1
0000 0001 0002 0003 0004 0005 0011 0013 0014 0022 0023 0112 0113 0122 1111 1112 3999 4899 5799 5889 5999 6888 6899 7779 7788 7999 8888 8899 8999 9999

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Tier 22
6789(6798,6879,6897,6978,6987,7689,7698,7869,7896,7968,7986,8679,8697,8769,8796,8976,9678,9687,9768,9786,9876)

Tier 12
0013(0031,0103,0130,0301,0310,1003,1030,1300,3001,3010,3100) 0014(0041,0104,0140,0401,0410,1004,1040,1400,4001,4010,4100) 0023(0032,0203,0230,0302,0320,2003,2030,2300,3002,3020,3200) 0112(0121,0211,1012,1021,1102,1120,1201,1210,2011,2101,2110) 0113(0131,0311,1013,1031,1103,1130,1301,1310,3011,3101,3110) 0122(0212,0221,1022,1202,1220,2012,2021,2102,2120,2201,2210) 4899(4989,4998,8499,8949,8994,9489,9498,9849,9894,9948,9984) 5799(5979,5997,7599,7959,7995,9579,9597,9759,9795,9957,9975) 5889(5898,5988,8589,8598,8859,8895,8958,8985,9588,9858,9885) 6899(6989,6998,8699,8969,8996,9689,9698,9869,9896,9968,9986)

Tier 11
0012(0021,0102,0120,0201,0210,1002,1020,1200,2001,2010)

Tier 10
7889(7898,8789,8798,8879,8897,8978,8987,9788,9878)

Tier 6
0011(0101,0110,1001,1010,1100) 0022(0202,0220,2002,2020,2200) 7788(7878,7887,8778,8787,8877) 8899(8989,8998,9889,9898,9988)

Tier 5
6699(6969,6996,9669,9966) 7979(7997,9779,9797,9977)

Tier 4
0001(0010,0100,1000) 0002(0020,0200,2000) 0003(0030,0300,3000) 0004(0040,0400,4000) 0005(0050,0500,5000) 1112(1121,1211,2111) 3999(9399,9939,9993) 5999(9599,9959,9995) 6888(8688,8868,8886) 7779(7797,7977,9777) 7999(9799,9979,9997) 8999(9899,9989,9998)

Tier 3
0111(1011,1101)

Tier 1
0000 1111 8888 9999