using System;
class PrintSequence
{
    static void Main()
    {
        for (int i = 2; i <= 11; i++)
            if (i % 2 == 0)
            {
                if (i == 2)  //This "if" will remove the comma before the first number.
                    Console.Write(i);
                else

                    Console.Write("," + i);
            }

            else
                Console.Write("," + (-i));

    }
}