#include<bits/stdc++.h>
using namespace std;
#define endl "\n"
typedef long long ll;
typedef pair<int,int> pii;
int main(){
	ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	char a;
	int Tier21W=0,Tier21L=0,Tier11W=0,Tier11L=0,RoundStd=1,RoundMex=1;
	while(cin>>a,a!='E'){
		if(a=='W')Tier21W++,Tier11W++;
		if(a=='L')Tier21L++,Tier11L++;
		if((Tier21W>Tier21L+1&&Tier21W>=21)||(Tier21L>Tier21W+1&&Tier21L>=21)){
			if(RoundMex==1)cout<<endl;
			RoundMex++;
			cout<<Tier21W<<":"<<Tier21L<<endl;
			Tier21W=Tier21L=0;
		}
		if((Tier11W>Tier11L+1&&Tier11W>=11)||(Tier11L>Tier11W+1&&Tier11L>=11)){
			RoundStd++;
			printf("%d:%d\n",Tier11W,Tier11L);
			Tier11W=Tier11L=0;
		}
		
	}
			if(RoundMex==1)cout<<endl;
			cout<<Tier21W<<":"<<Tier21L<<endl;
			printf("%d:%d\n",Tier11W,Tier11L);
			fflush(stdout);
}

#6 Too short on line 2458