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

namespace Worm_Ipsum
{
    class WormIpsum
    {
        static void Main()
        {


            var input = Console.ReadLine();

            while (input != "Worm Ipsum")
            {
                var sentence = input.Split(new[] { '.' }, StringSplitOptions.RemoveEmptyEntries);

                var isCapitalChar = Char.IsUpper(sentence[0][0]);

                if (!(sentence.Length == 1 && isCapitalChar))
                {
                    input = Console.ReadLine();
                    continue;
                }
                var sent = sentence[0];
                var shit1 = sent.IndexOf('\'');
                var shit2 = sent.IndexOf(',');

                var wordsInSentence = sentence[0].Split(new[] { ' ' , '\'', ','}, StringSplitOptions.RemoveEmptyEntries).ToList();

               // foreach (var word in wordsInSentence)
                  for (int i = 0; i < wordsInSentence.Count; i++)
                    {
                    var word = wordsInSentence[i];
                    Dictionary<char, int> dict = new Dictionary<char, int>();

                    int max = 0;
                    foreach (char c in word)
                    {
                        int j;
                        dict.TryGetValue(c, out j);
                        j++;
                        if (j > max)
                        {
                            max = j;
                        }
                        dict[c] = j;
                    }

                    var mostOccurrenceChar = dict.OrderByDescending(x => x.Value);

                    var theChar = mostOccurrenceChar.First().Key.ToString().ToCharArray();

                    //var theChar = mostOccurrenceChar.Key().First().ToString().ToCharArray();

                    var theCount = int.Parse(mostOccurrenceChar.First().Value.ToString());

                    if (theCount >=2 )
                    {
                        var newWord = new string(theChar[0], word.Length);
                        var index = wordsInSentence.IndexOf(word);
                        wordsInSentence[index] = newWord;
                    }

                    //foreach (KeyValuePair<char, int> chars in dict)
                    //{
                    //    if (chars.Value == max)
                    //    {
                    //        Console.WriteLine("{0}: {1}", chars.Key, chars.Value);
                    //    }
                    //}

                    }
                var result = string.Join(" ", wordsInSentence) + ".";

                if (shit1 != -1)
                {
                    StringBuilder sb = new StringBuilder(result);
                    sb[shit1] = '\'';
                    result = sb.ToString();

                }

                if (shit2 != -1)
                {
                    StringBuilder sb = new StringBuilder(result);
                    sb[shit2] = ',';
                    result = sb.ToString();
                    result = result.Replace(",", ", ");

                }

                Console.WriteLine(result);


                input = Console.ReadLine();
            }

        }
    }
}