属于这两组的第一个数字：
1,9,45,55,99,999,2223,7777,9999,22222,77778,99999,999999,4444444,5555556,9999999,11111112,88888888,99999999,999999999,1111111111,8888888889,9999999999,44444444445,55555555555,99999999999,999999999999,2222222222223,7777777777777,9999999999999,22222222222222,77777777777778,99999999999999,999999999999999.