using System;

using System.Text;

​

public class Program

{

    const string StartSequence = "";

    static Random random = new Random();

    public static void Main()

    {

        while(true)

        {

            var word = GetWord(7);

            Console.WriteLine(word);

            Console.ReadLine();

        }

    }

    private static string GetWord(int lettersCount)

    {

        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < lettersCount; i++)

            sb.Append(GetRandomLetter());

        return sb.ToString();

    }

​

​

    private static string GetRandomLetter()

    {

        return ((char)random.Next((int)'а', (int)'я' + 1)).ToString();

    }

}