#include<bits/stdc++.h>
using namespace std;
char a[100000];
long long ans,num1,num2,num3;
int main(){
	for(int i=1;;i++){
		cin>>a[i];
		ans++;
		if(a[i]=='E'){
			break;
		}
	}
	for(int i=1;i<=ans;i++){
		if(a[i]=='W'){
			num1++;
		}
		else if(a[i]=='L'){
			num2++;
		}
		num3=num1+num2;
		if(num3==11){
			cout<<num1<<":"<<num2<<endl;
			num1=0,num2=0,num3=0;
		}
		if(a[i]=='E'){
			cout<<num1<<":"<<num2<<endl<<endl;
			break; 
		}
	}
		num1=0,num2=0,num3=0;
		for(int i=1;i<=ans;i++){
		if(a[i]=='W'){
			num1++;
		}
		else if(a[i]=='L'){
			num2++;
		}
		num3=num1+num2;
		if(num3==21){
			cout<<num1<<":"<<num2<<endl;
			num1=0,num2=0,num3=0;
		}
		if(a[i]=='E'){
			cout<<num1<<":"<<num2;
			break; 
		}
	}
	return 0;
}