using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

         int k = 9;

​

            for (int i = 1; i <= k; i++)

            {

                switch (i)

                {

                    case 3:

                        k = k - 1;

                        break;

                    case 4:

                        k = k - 3;

                        break;

                    case 5:

                        k = k - 4;

                        break;

                    case 6:

                        k = k - 5;

                        break;

                    case 7:

                        k = k - 6;

                        break;

                    case 8:

                        k = k - 6;

                        break;

                    case 9:

                        k = k - 7;

                        break;

                    default:

                        k = 9;

                        break;

                }

                for (int j = 2; j <= k; j++)

                {

                    Console.Write(j + "*" + i + "=" + i * j + " \t");

                }

                k = 9;

                Console.WriteLine(); //換行。

            }

            Console.ReadLine();

    }

}