属于这两组的第一个数字：
55,555,1199,2288,3377,4466,5555,6644,7733,8822,9911,55555,111999,115599,222888,225588,333777,335577,444666,445566,555555,665544,666444,775533,777333,885522,888222,995511,999111,1155599,2255588,3355577,4455566,5555555,6655544,7755533,8855522,9955511,11119999,11155999,11228899,11337799,11446699,11555599,11664499,11773399,11882299,11991199,22119988,22228888,22255888,22337788,22446688,22555588,22664488,22773388,22882288,22991188,33119977,33228877,33337777,33355777,33446677,33555577,33664477,33773377,33882277,33991177,44119966,44228866,44337766,44446666,44455666,44555566,44664466,44773366,44882266,44991166,55119955,55228855,55337755,55446655,55555555,55664455,55773355,55882255,55991155,66119944,66228844,66337744,66446644,66555544,66655444,66664444,66773344,66882244,66991144,77119933,77228833,77337733,77446633,77555533,77664433,77755333,77773333,77882233,77991133,88119922,88228822,88337722,88446622,88555522,88664422,88773322,88855222,88882222,88991122,99119911,99228811,99337711,99446611,99555511,99664411,99773311,99882211,99955111,99991111,111555999,115555599,222555888,225555588,333555777,335555577,444555666,445555566,555555555,665555544,666555444,775555533,777555333,885555522,888555222,995555511,999555111,1111199999,1111559999,1112288999,1113377999,1114466999,1115555999,1116644999,1117733999,1118822999,1119911999,1122288899,1122558899,1133377799,1133557799,1144466699,1144556699,1155555599,1166554499,1166644499,1177553399,1177733399,1188552299,1188822299,1199551199,1199911199,2211199988,2211559988,2221199888,2222288888,2222558888,2223377888,2224466888,2225555888,2226644888,2227733888,2228822888,2229911888,2233377788,2233557788,2244466688,2244556688,2255555588,2266554488,2266644488,2277553388,2277733388,2288552288,2288822288,2299551188,2299911188,3311199977,3311559977,3322288877,3322558877,3331199777,3332288777,3333377777,3333557777,3334466777,3335555777,3336644777,3337733777,3338822777,3339911777,3344466677,3344556677,3355555577,3366554477,3366644477,3377553377,3377733377,3388552277,3388822277,3399551177,3399911177,4411199966,4411559966,4422288866,4422558866,4433377766,4433557766,4441199666,4442288666,4443377666,4444466666,4444556666,4445555666,4446644666,4447733666,4448822666,4449911666,4455555566,4466554466,4466644466,4477553366,4477733366,4488552266,4488822266,4499551166,4499911166,5511199955,5511559955,5522288855,5522558855,5533377755,5533557755,5544466655,5544556655,5551199555,5552288555,5553377555,5554466555,5555555555,5556644555,5557733555,5558822555,5559911555,5566554455,5566644455,5577553355,5577733355,5588552255,5588822255,5599551155,5599911155,6611199944,6611559944,6622288844,6622558844,6633377744,6633557744,6644466644,6644556644,6655555544,6661199444,6662288444. 一些较大的示例：
999335555577111,999444555666111,999445555566111,999555555555111,999665555544111,999666555444111,999775555533111,999777555333111,999885555522111,999888555222111,999911555991111,999922555881111,999933555771111,999944555661111,999955555551111,999966555441111,999977555331111,999988555221111,999995555511111,999999555111111.