First numbers that belong to both sets:
111,
222,
333,
444,
555,
666,
777,
888,
999,
1100,
1122,
1188,
2200,
2244,
3300,
3366,
3388,
4400,
4488,
5500,
5544,
5566,
6600,
7700,
7722,
7744,
8800,
9900,
9922,
11000,
11100,
11133,
22000,
22200,
22266,
33000,
33111,
33300,
33399,
33444,
33777,
44000,
44400,
55000,
55500,
55566,
66000,
66222,
66555,
66600,
66888,
77000,
77700,
77733,
88000,
88800,
99000,
99333,
99900,
110000,
110022,
110088,
111000,
111100,
111144,
111222,
111888,
112200,
112266,
112288,
113344,
114400,
114422,
114444,
114466,
115500,
116622,
116644,
117744,
118800,
118822,
119900,
119988,
220000,
220044,
221100,
221144,
221166,
221188,
222000,
222111,
222200,
222288,
222444,
222777,
223300,
223344,
223366,
224400,
225522,
225544,
226688,
227700,
227722,
228800,
228844,
228888,
229900,
330000,
330066,
330088,
332200,
332244,
332266,
333000,
333300,
333666,
334422,
334444,
335544,
336600,
336622,
337700,
337788,
338800,
440000,
440088,
441100,
441144,
441166,
442200,
442288,
443322,
443344,
444000,
444222,
444400,
444555,
444888,
445500,
445522,
446600,
446688,
447700,
448800,
449988,
550000,
550044,
550066,
551100,
552222,
552244,
552266,
553344,
554400,
554422,
555000,
555444,
555500,
555588,
556600,
558866,
559944,
559988,
660000,
661122,
661144,
663300,
663322,
664400,
664488,
665500,
665522,
666000,
666333,
666600,
668844,
668888,
669900,
770000,
770022,
770044,
771144,
772200,
772222,
773300,
773388,
774400,
777000,
777222,
777700,
777744,
777788,
778800,
880000,
881100,
881122,
882200,
882288,
883300,
884400,
886644,
886688,
887700,
888000,
888111,
888444,
888800,
889922,
990000,
990022,
991100,
991144,
991188,
992200,
993344,
995544,
995588,
996600,
998844,
999000,
999900,
999944,
1100000,
1100022,
1100088,
1110000,
1110033,
1111000,
1111100,
1111122,
1111155,
1111177,
1111199,
1112211,
1113300,
1113399,
1114499,
1116600,
1116611,
1116633,
1116666,
1119933,
1122000,
1122111,
1122200,
1122288,
1122444,
1122555,
1133000,
1133555,
1133888,
1144000,
1144422,
1155000,
1155222,
1155888,
1155999,
1166600,
1166688,
1188000,
1188844,
1199000,
1199555,
2200000,
2200044,
2211000,
2211111,
2211444,
2220000,
2220066,
2222000,
2222200,
2222244,
2223300,
2224422,
2225544,
2226600,
2227700,
2227788.
Some larger examples :
9999888000,
9999888777,
9999889900,
9999900000,
9999900099,
9999900666,
9999933300,
9999955500,
9999955588,
9999966000,
9999966699,
9999990000,
9999990044,
9999990066,
9999992244,
9999993300,
9999994422,
9999995544,
9999996600,
9999999666.