[1,1,10,10,100,100,1010,1010,10000,10000,101000, 101000,1000100,1000100,10101010,10101010, 100000000,100000000,1010000000,1010000000, 10001000000,10001000000,101010100000,101010100000, 1000000010000,1000000010000,10100000101000]