属于这两个集合的第一个数字：
121,242,363,484,1010,1212,1313,1414,1515,1616,1717,1818,1919,2020,2121,2323,2424,2525,2626,2727,2828,2929,3030,3131,3232,3434,3535,3636,3737,3838,3939,4040,4141,4242,4343,4545,4646,4747,4848,4949,5050,5151,5252,5353,5454,5656,5757,5858,5959,6060,6161,6262,6363,6464,6565,6767,6868,6969,7070,7171,7272,7373,7474,7575,7676,7878,7979,8080,8181,8282,8383,8484,8585,8686,8787,8989,9090,9191,9292,9393,9494,9595,9696,9797,9898,17171,23232,46464,52525,69696,101010,121212,131313,141414,151515,161616,171717,181818,191919,202020,212121,232323,242424,252525,262626,272727,282828,292929,303030,313131,323232,343434,353535,363636,373737,383838,393939,404040,414141,424242,434343,454545,464646,474747,484848,494949,505050,515151,525252,535353,545454,565656,575757,585858,595959,606060,616161,626262,636363,646464,656565,676767,686868,696969,707070,717171,727272,737373,747474,757575,767676,787878,797979,808080,818181,828282,838383,848484,858585,868686,878787,898989,909090,919191,929292,939393,949494,959595,969696,979797,989898,1515151,3434343,5353535,6868686,7272727,10101010,12121212,13131313,14141414,15151515,16161616,17171717,18181818,19191919,20202020,21212121,23232323,24242424,25252525,26262626,27272727,28282828,29292929,30303030,31313131,32323232,34343434,35353535,36363636,37373737,38383838,39393939,40404040,41414141,42424242,43434343,45454545,46464646,47474747,48484848,49494949,50505050,51515151,52525252,53535353,54545454,56565656,57575757,58585858,59595959,60606060,61616161,62626262,63636363,64646464,65656565,67676767,68686868,69696969,70707070,71717171,72727272,73737373,74747474,75757575,76767676,78787878,79797979,80808080,81818181,82828282,83838383,84848484,85858585,86868686,87878787,89898989,90909090,91919191,92929292,93939393,94949494,95959595,96969696,97979797,98989898,141414141,282828282,595959595,1010101010,1212121212,1313131313,1414141414,1515151515,1616161616,1717171717,1818181818,1919191919,2020202020,2121212121,2323232323,2424242424,2525252525,2626262626,2727272727,2828282828,2929292929,3030303030,3131313131. 一些较大的示例：
8080808080,8181818181,8282828282,8383838383,8484848484,8585858585,8686868686,8787878787,8989898989,9090909090,9191919191,9292929292,9393939393,9494949494,9595959595,9696969696,9797979797,9898989898,29292929292,56565656565.