First numbers that belong to both sets:
11,
22,
44,
77,
111,
222,
444,
777,
1100,
1111,
1122,
1144,
1177,
2200,
2211,
2222,
2244,
2277,
3300,
3311,
3322,
3344,
3377,
4400,
4411,
4422,
4444,
4477,
7700,
7711,
7722,
7744,
7777,
11000,
11100,
11111,
11122,
11144,
11177,
11222,
11444,
11777,
22000,
22111,
22200,
22211,
22222,
22244,
22277,
22444,
22777,
44000,
44111,
44222,
44400,
44411,
44422,
44444,
44477,
44777,
77000,
77111,
77222,
77444,
77700,
77711,
77722,
77744,
77777,
110000,
110011,
110022,
110044,
110077,
111000,
111100,
111111,
111122,
111144,
111177,
111222,
111444,
111777,
112200,
112211,
112222,
112244,
112277,
114400,
114411,
114422,
114444,
114477,
117700,
117711,
117722,
117744,
117777,
220000,
220011,
220022,
220044,
220077,
221100,
221111,
221122,
221144,
221177,
222000,
222111,
222200,
222211,
222222,
222244,
222277,
222444,
222777,
223300,
223311,
223322,
223344,
223377,
224400,
224411,
224422,
224444,
224477,
227700,
227711,
227722,
227744,
227777,
440000,
440011,
440022,
440044,
440077,
441100,
441111,
441122,
441144,
441177,
442200,
442211,
442222,
442244,
442277,
443300,
443311,
443322,
443344,
443377,
444000,
444111,
444222,
444400,
444411,
444422,
444444,
444477,
444777,
447700,
447711,
447722,
447744,
447777,
770000,
770011,
770022,
770044,
770077,
771100,
771111,
771122,
771144,
771177,
772200,
772211,
772222,
772244,
772277,
773300,
773311,
773322,
773344,
773377,
774400,
774411,
774422,
774444,
774477,
777000,
777111,
777222,
777444,
777700,
777711,
777722,
777744,
777777.