#include<bits/stdc++.h>
using namespace std;
int s[12000];
int s1[6000];
int main()
{
	int w1=0,l1=0,w2=0,l2=0,tot=0,tot1=0; 
	for (;;){
		char tmp;
		cin >> tmp;
		if (tmp == 'E'){
			break;
		}
		if (tmp == 'W'){
			w1++;
			w2++;
		}
		if (tmp == 'L'){
			l1++;
			l2++;
		}
		if ((w1 >= 11 || l1 >= 11) && abs(w1-l1) >= 2){
			s[++tot] = w1;
			s[++tot] = l1;
			w1=0;
			l1=0;
		}
		if ((w2 >= 21 || l2 >= 21) && abs(w2-l2) >= 2){
			s1[++tot1] = w2;
			s1[++tot1] = l2;
			w2=0;
			l2=0;
		}
	}
	for (int i = 1;i <= tot;i+=2){
		cout << s[i] << ':' << s[i+1] << endl;
	}
	cout << w1 << ':' << l1 << endl;
	cout << endl;
	cout << endl;
	for (int i = 1;i <= tot1;i+=2){
		cout << s1[i] << ':' << s1[i+1] << endl;
	} 
	cout << w2 << ':' << l2 << endl;
	return 0;
}