First numbers that belong to both sets:
3,
5,
6,
9,
12,
15,
17,
18,
23,
24,
27,
29,
33,
34,
36,
39,
45,
46,
48,
57,
58,
66,
68,
77,
78,
89,
99,
111,
113,
114,
116,
119,
123,
125,
126,
129,
135,
136,
139,
144,
147,
149,
156,
159,
166,
169,
177,
178,
189,
222,
225,
226,
228,
235,
237,
238,
245,
246,
249,
255,
257,
258,
267,
269,
277,
278,
288,
335,
337,
338,
344,
347,
349,
356,
359,
366,
368,
377,
378,
389,
399,
444,
447,
449,
455,
456,
459,
467,
469,
479,
489,
556,
559,
567,
568,
579,
588,
599,
667,
669,
679,
688,
777,
778,
788,
888,
999,
1111,
1112,
1115,
1117,
1118,
1122,
1124,
1127,
1128,
1133,
1134,
1136,
1139,
1145,
1146,
1148,
1155,
1157,
1158,
1167,
1169,
1179,
1188,
1223,
1224,
1227,
1229,
1235,
1237,
1238,
1244,
1247,
1248,
1257,
1258,
1266,
1268,
1277,
1278,
1289,
1333,
1334,
1337,
1338,
1345,
1346,
1348,
1355,
1357,
1358,
1366,
1369,
1379,
1388,
1399,
1445,
1446,
1449,
1455,
1457,
1458,
1467,
1469,
1477,
1478,
1489,
1499,
1556,
1559,
1566,
1569,
1579,
1589,
1599,
1666,
1668,
1677,
1678,
1689,
1699,
1779,
1788,
1799,
1889,
1899,
2222,
2224,
2227,
2229,
2233,
2234,
2236,
2239,
2244,
2247,
2248,
2256,
2259,
2266,
2268,
2277,
2278,
2289,
2299,
2333,
2334,
2337,
2338,
2344,
2347,
2349,
2355,
2357,
2358,
2367,
2369,
2379,
2389,
2399,
2445,
2446,
2448,
2457,
2458,
2467,
2469,
2479,
2488,
2499,
2556,
2559,
2566,
2569,
2577,
2578,
2589,
2599,
2666,
2668,
2679,
2689,
2699,
2779,
2788,
2889,
3335,
3336,
3339,
3344,
3347,
3349,
3356,
3359,
3366,
3369,
3377,
3378,
3389,
3445,
3446,
3449,
3455,
3456,
3459,
3466,
3468,
3479,
3489,
3499,
3555,
3557,
3558,
3567.
Some larger examples :
777788999,
777888888,
777888999,
777889999,
777899999,
778888889,
778888999,
778889999,
778899999,
788888888,
788888899,
788888999,
788889999,
788899999,
799999999,
888888888,
888888899,
888888999,
888889999,
889999999.