#include<bits/stdc++.h>
using namespace std;
string s;
void read(){//¶ÁÈ뺯Êý
	char c;
	while(c!='E'){
		s+=c;
		cin >> c;
	}
}
void work(int point_system){//¼ÆËã·ÖÊý
	int x=s.size()/point_system;
	int w=0,l=0;
	for(int i=1;i<=x*point_system;i++){//¿ÉÒÔÕû³ý²¿·ÖµÄ·ÖÊý
		if(s[i]=='W')w++;
		if(s[i]=='L')l++;
		if((w>=point_system||l>=point_system)&&abs(w-l)>=2){
			cout << w << ':' << l << endl;
			w=0,l=0;
		}
	}
	w=0,l=0;
	for(int i=x*point_system+1;i<=s.size();i++){//²»ÄÜÕû³ýµÄ²¿·Ö
		if(s[i]=='W')w++;
		if(s[i]=='L')l++;
	}
	if(s.size()%point_system!=0)cout << w << ':' << l;
}
int main(){
	read();
	work(11);
	cout << endl << endl;
	work(21);
	return 0;
}