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 (MatchCollection match in matches)
        {
            Console.Write("{0} ", match);
        }
        Console.WriteLine();
    }
}