static void Step1292()
 {
     Console.WriteLine();
     Console.WriteLine("1292");
     String[] in1292  = { "a", "b", "d", "h", "i" };
     String[] out1292 = { "a", "ab", "abcd", "abcdefgh", "abcdefgh" };
     for (int i = 0; i < in1292.Length; i++)
     {
         String result = Lab05.task1292(new StringBuilder(), in1292[i]).ToString();
         Console.WriteLine("Ожидалось : " + out1292[i]);
         Console.WriteLine("Получилось: " + result);
     }
 }