using System;
using System.Text;
using System.Text.RegularExpressions;

public class Example
{
    public static void Main()
    {
        string input = Console.ReadLine();
        var sb = new StringBuilder(input.Length);

        string pattern = @"(\w+)-\1";
        Regex rgx = new Regex(pattern);
        var matches = rgx.Matches(input);
        int position = 0;

        foreach (Match match in matches)
        {
            var index = match.Index;
            sb.Append(input.Substring(position, index));
            sb.Append(" ");
            position = index;
            position += match.Value.Length;
        }
        sb.Append(input.Substring(position, input.Length- 1));
    }
}