using System;

using System.Globalization;

using System.Text;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        string b = "\\ufxyz";

        string search ="\\uf";

        bool a = b.Contains(search);

        if (a)

        {

            Console.WriteLine("Target string " + b + " containts: " +search );

        }

    }

}