05. Digits, Letters and Other

using System;
using System.Linq;
using System.Collections.Generic;

namespace DigitsLettersAndOther
{

    class Program
    {
        static void Main()
        {
            string text = Console.ReadLine();

            Console.WriteLine(string.Join("", text.Where(x => char.IsDigit(x))));
            Console.WriteLine(string.Join("", text.Where(x => char.IsLetter(x))));
            Console.WriteLine(string.Join("", text.Where(x => !char.IsLetterOrDigit(x))));
        }
    }
}