static void HW4()
        {

            int a = 1;
            int sk1 = 1;
            int sk2 = 5;


             while (a <=7)
            {

                 while (sk1 <= sk2)
                {
                    Console.Write(sk1 + " ");
                    sk1++;
                }
                a++;

            }
            Console.WriteLine();


        }

    }