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

class MathPhoneNumber
{
    static void Main()
    {
        string phoneNumber = @"359-2-222-2222, +359/2/222/2222, +359-2 222 2222, +359 2-222-2222, +359-2-222-222, +359-2-222-22222,
                                +359 2 222 2222, +359-2-222-2222";
        string pattern = @"^|[+359]+(-| )[2]\1[\d]{3}\1[\d]{4}\b";

        MatchCollection matches = Regex.Matches(phoneNumber, pattern);

        foreach (Match match in matches)
        {
            Console.WriteLine("{0} ", match);
        }

    }
}