1010, 11, 1111, 1212, 1313, 1414, 1515, 1616, 1717, 1818, 1919, 2020, 2121, 22, 2222, 2323, 2424, 2525, 2626, 2727, 2929, 33, 44, 55, 66, 77, 88, 99