using System;
using System.Collections.Generic;
using System.Text;

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            //请完善代码
            for(int x=1;x<=7;x++){
                for(int i=1;i<=7;i++){
                    if(x-i==0||x+i==8){
                    Console.Write("o");
                    }else{
                        Console.Write(".");
                    }
                }
                Console.WriteLine();
            }
        }
    }
}