using System;

using System.Collections.Generic;

public class Program

{ 

    public static void Main()

    {   var listTableNames = new List<string>();

        var liststTable1 = new List<string> { "test1", "test2", "test3" };

        var liststTable2 = new List<string> { "test4", "test5", "test6" };

        var liststTable3 = new List<string> { "test7", "test8", "test9" };

        listTableNames.AddRange(liststTable1);

        listTableNames.AddRange(liststTable2);

        listTableNames.AddRange(liststTable3);

        Console.WriteLine("___Results___");

        listTableNames.ForEach(Console.WriteLine);

    }

}