using System;
using System.Linq;
using System.Collections.Generic;
public class Program {
    public static void Main() {
        char[] inputs = Console.ReadLine().ToArray();
        int win = 0;
        int lose = 0;
        //11分值
        for (int i = 0; i < inputs.Length; i++)
        {
            char currChar = inputs[i];
            if (currChar == 'W')
                win++;
            if (currChar == 'L')
                lose++;

            //判断当前比分是否满足11分制的获胜条件
            int currMax = Math.Max(win, lose);
            int curMin = Math.Min(win, lose);
            if (currMax < 11)
                continue;
            if ((currMax - curMin) >= 2)
            {
                Console.WriteLine(win + ":" + lose);
                win = 0;
                lose = 0;
            }
            else
            {
                continue;
            }
        }
        //输出最后一局
        Console.WriteLine(win + ":" + lose);
        Console.WriteLine();

        //21分值
        //更新输赢
        win = 0;
        lose = 0;
        for (int i = 0; i < inputs.Length; i++)
        {
            char currChar = inputs[i];
            if (currChar == 'W')
                win++;
            if (currChar == 'L')
                lose++;

            //判断当前比分是否满足11分制的获胜条件
            int currMax = Math.Max(win, lose);
            int curMin = Math.Min(win, lose);
            if (currMax < 21)
                continue;
            if ((currMax - curMin) >= 2)
            {
                Console.WriteLine(win + ":" + lose);
                win = 0;
                lose = 0;
            }
            else
            {
                continue;
            }
        }
        //输出最后一局
        Console.WriteLine(win + ":" + lose);
    }
}