#include<bits/stdc++.h>
using namespace std;
int v_11[3],v_21[3];
//两种计分，v[1]为w，v[2]为l
char str[100001];
int main(){
    int i=1;
    while(1){
        cin>>str[i];
        if(str[i]=='E'){
            break;
        }
    }
    for(int j=1;j<=i-1;j++){
        if(((v_11[1]>=11)&&(v_11[1]-v_11[2]>=2))||((v_11[2]>=11)&&(v_11[2]-v_11[1]>=2))){
            cout<<v_11[1]<<':'<<v_11[2]<<endl;
            v_11[1]=0;
            v_11[2]=0;
        }
        if(str[i]=='W'){
            v_11[1]++;
        }
        if(str[i]=='L'){
            v_11[2]++;
        }
    }
    cout<<v_11[1]<<':'<<v_11[2]<<endl<<endl;
    for(int j=1;j<=i-1;j++){
        if(((v_21[1]>=21)&&(v_21[1]-v_21[2]>=2))||((v_21[2]>=21)&&(v_21[2]-v_21[1]>=2))){
            cout<<v_21[1]<<':'<<v_21[2]<<endl;
            v_21[1]=0;
            v_21[2]=0;
        }
        if(str[i]=='W'){
            v_21[1]++;
        }
        if(str[i]=='L'){
            v_21[2]++;
        }
    }
    cout<<v_21[1]<<':'<<v_21[2]<<endl;
    return 0;
}