C# OOP Class Abstract Sealed

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ClassAbstractSealed
{
    // Object Orianted Programmeng
    // abstract And sealed

    // Abstract
    abstract class parson 
    {
        // copy object is impossible ! is it possible after creat new inheritance ?
        // inheritance is possible !

        public void showMsg()
        {
            Console.WriteLine("i'm a parson");
        }
    }
    class programmeng:parson
    {
        // now possible is copy object !
        string programmengLanguage; // is it not know now
    }

    // sealed
    sealed class doctor
    {
        // copy object is impossible !
        // inheritaince is impossible !

        public void shoiwMsg()
        {
            Console.WriteLine("i'm a doctor");
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            // copy object from abstract class
            programmeng prog = new programmeng();
            // test code
            prog.showMsg();

            Console.ReadKey();
        }
    }
}