First numbers that belong to both sets:
33,
66,
77,
99,
111,
222,
444,
777,
888,
999,
1100,
1111,
1122,
1133,
1155,
1188,
2200,
2222,
2233,
2244,
2266,
2277,
2299,
3300,
3322,
3344,
3366,
3377,
4400,
4444,
4466,
4477,
4488,
4499,
5500,
5522,
5533,
5544,
5555,
5599,
6600,
6611,
6633,
6644,
6677,
6688,
7700,
7733,
7755,
7766,
7788,
7799,
8800,
8833,
8888,
8899,
9922,
9933,
9955,
9999,
11000,
11100,
11122,
11133,
11144,
11155,
11177,
11188,
11333,
22000,
22111,
22200,
22211,
22244,
22266,
22288,
22333,
22666,
22999,
33222,
33300,
33333,
33355,
33366,
33388,
33399,
33555,
33777,
33888,
33999,
44000,
44222,
44400,
44422,
44433,
44455,
44488,
44499,
44555,
44666,
44777,
55111,
55500,
55511,
55522,
55533,
55566,
55577,
55599,
55999,
66111,
66444,
66555,
66600,
66611,
66655,
66666,
66699,
77111,
77333,
77700,
77722,
77733,
77755,
77766,
77777,
77799,
77888,
88000,
88333,
88444,
88800,
88844,
88855,
88866,
88877,
99111,
99222,
99555,
99888,
99900,
99911,
99966,
99999,
110011,
110022,
110033,
110055,
111000,
111111,
111166,
111177,
111188,
111222,
111333,
111555,
111666,
111777,
112200,
112211,
112233,
112244,
112277,
112288,
113311,
113322,
113344,
113377,
114400,
114444,
114455,
114466,
114477,
115500,
115511,
115544,
115566,
115577,
115599,
116600,
116622,
116633,
116655,
116677,
116699,
117711,
117744,
117788,
118811,
118844,
118855,
119911,
119966,
119999,
220011,
220022,
220044,
220055,
220066,
220077,
221100,
221111,
221144,
221166,
221177,
221199,
222000,
222111,
222222,
222233,
222255,
222277,
222299,
222444,
222666,
222777,
223311,
223344,
223366,
223377,
223399,
224400,
224422,
224433,
224466,
224477,
224488,
224499,
225500,
225522,
225533,
225566,
225599,
226622,
226633,
226644,
226677,
226688,
227711,
227722,
227755,
227766,
227777,
228800,
228833,
228888,
229900,
229911,
229922,
229933,
229966,
229977,
229999,
330011,
330044,
330055,
331111,
331166,
331199,
332222,
332233,
332244,
332277,
332288,
333111,
333300,
333333,
333344,
333388,
333399,
333777,
333999,
334400,
334433,
334488,
335544,
335555,
335588,
336600,
336622.
Some larger examples :
999996644,
999996666,
999996688,
999997711,
999997744,
999997788,
999998811,
999998844,
999998866,
999998877,
999998888,
999998899,
999999333,
999999444,
999999666,
999999911,
999999944,
999999955,
999999977,
999999988.