class Program
    {
        private static int MAX;
        private static int a;
        private static int b;
        private static int c;
        private static int Increment;

        static void Main(string[] args)
        {
            MAX = 10;
            a = 1;
            b = 4;
            c = 7;
            Increment = 0;


            while(a < MAX || b < MAX || c < MAX)
            {
                switch (Increment)
                {
                    case 0: { PrintVars(a); break; }
                    case 1: { PrintVars(b); break; }
                    case 2: { PrintVars(c); break; }
                    default: { Increment = 0; break; }
                }
            }
            Console.ReadLine();
        }

        public static void PrintVars(int toincrease)
        {
            if (toincrease == a) a++;
            else if (toincrease == b) b++;
            else if (toincrease == c) c++;
            Increment++;
            Console.WriteLine(a + ", " + b + ", " + c);
        }
    }