using System;
using System.Text.RegularExpressions;
namespace P10_15
{
    class Program
    {
       static void Main(string[] args)
        {
            string input = "123abc45abc6abc";   
            string pattern = "abc?";            	
            Match match = Regex.Match(input, pattern);	
            while (match.Success)
            {
                Console.WriteLine("'{0}'Դλǣ{1}", match.Value, match.Index);
                match = match.NextMatch();	
            }
            Console.ReadLine();
        }
    }
}
