#include<bits/stdc++.h>
using namespace std;
string s[2510];
int w1[250010],l1[250010],w2[250010],l2[250010],n,len1=1,len2=1;
bool b;
int main(){
	ios::sync_with_stdio(false);
	while(1){
		cin>>s[++n];
		if(s[n].find("E")!=-1) break;
	} 
	for(int i=1;i<=n;i++){
		for(int j=0;j<s[i].size();j++){
			if(s[i][j]=='E'){
				b=1;break;
			}
			else if(s[i][j]=='W') w1[len1]++,w2[len2]++;
			else if(s[i][j]=='L') l1[len1]++,l2[len2]++;
			if((w1[len1]>=11||l1[len1]>=11)&&abs(w1[len1]-l1[len1])>=2) len1++;
			if((w2[len2]>=21||w2[len2]>=21)&&abs(w2[len2]-l2[len2])>=2) len2++;
		}
		if(b) break;
	}
	for(int i=1;i<=len1;i++){
		printf("%d:%d\n",w1[i],l1[i]);
	}
	for(int i=1;i<=len2;i++){
		printf("\n%d:%d",w2[i],l2[i]);
	}
	return 0;
}