First numbers that belong to both sets:
69,
111,
609,
818,
888,
1111,
1881,
6009,
6699,
8888,
10101,
11111,
18081,
60009,
66099,
80108,
80808,
81818,
88888,
111111,
180081,
600009,
606909,
660099,
666999,
696969,
816918,
888888,
969696,
1001001,
1010101,
1111111,
1800081,
6000009,
6060909,
6600099,
6660999,
8008008,
8080808,
8160918,
8181818,
8888888,
11011011,
11111111,
16000091,
18000081,
18188181,
60000009,
60069009,
60600909,
66000099,
66600999,
66669999,
69069069,
69696969,
81600918,
88088088,
88888888,
96096096,
96969696,
100010001,
101010101,
101101101,
111111111,
168000891,
180000081,
181181181,
181808181,
600000009,
600609009,
606000909,
609609609,
618000819,
619619619,
660000099,
666000999,
666609999,
686010989,
689689689,
696111969,
800080008,
808080808,
808808808,
816000918,
818181818,
818818818,
888888888,
906906906,
916916916,
986986986,
1001001001,
1100110011,
1111111111,
1616009191,
1800000081,
1801881081,
1818008181.