#include<bits/stdc++.h>
using namespace std;
char a[62510],b;
int main(){
    int e=0;
    while(cin>>b&&b!='E') {if(b=='W'||b=='L')a[e++]=b;}
    int w,l;w=l=0;
    int f[]={11,21};
    for(int k=0;k<2;k++)
    {
        for(int i=0;i<e;i++)
        {
            if(a[i]=='W') w++;
            if(a[i]=='L') l++;
            if((w>=f[k]||l>=f[k])&&(abs(w-l)>=2))
            {
                cout<<w<<":"<<l<<endl;
                w=l=0;
            }
        }
        cout<<w<<":"<<l<<endl<<endl;
    }
}