#include <iostream>
#include <vector>
#include <map>
#include <cmath>
#include <sstream>
#include <algorithm>
#include <string>
using namespace std;



int main()
{
	char s;
	int score11_1 = 0, score11_2 = 0;
	int score21_1 = 0, score21_2 = 0;

	int count_11 = 0, count_21 = 0;

	vector<int> a11, b11, a21, b21;
	while (cin >> s)
	{
		if (s == 'E') 
			break;

		if ((score11_1 >= 11 || score11_2 >= 11) && abs(score11_1-score11_2)>=2)
		{
			a11.push_back(score11_1);
			b11.push_back(score11_2);

			score11_1 = 0;
			score11_2 = 0;
			count_11++;
		}

		if ((score21_1 >= 21 || score21_2 >= 21) && abs(score21_1 - score21_2) >= 2)
		{
			a21.push_back(score21_1);
			b21.push_back(score21_2);

			score21_1 = 0;
			score21_2 = 0;
			count_21++;
		}

		if (s == 'W') score11_1++, score21_1++;
		if (s == 'L') score11_2++, score21_2++;

	}

	for (int i = 0; i < count_11; i++)
	{
		cout << a11[i] << ":" << b11[i];
		cout << endl;
	}
	if (score11_1 != 0 || score11_2 != 0)
	{
		cout << score11_1 << ":" << score11_2;
		cout << endl;
	}
	cout << endl;
	for (int i = 0; i < count_21; i++)
	{
		cout << a21[i] << ":" << b21[i];
		cout << endl;
	}
	if (score21_1 != 0 || score21_2 != 0)
	{
		cout << score21_1 << ":" << score21_2;

	}

	return 0;
}