First numbers that belong to both sets:
23,
89,
12101,
212123,
234323,
654323,
3454343,
5678789,
7878989,
23232101,
45432323,
45434321,
65456543,
101212343,
323234321,
345656543,
2101232123,
2321212343,
2343212321,
6565454321,
6765654323,
6787654343.