#include<bits/stdc++.h>
using namespace std;
int main(){
	char a;
	char arr[70000];
	int k=1;
	while(cin>>a and a!='E'){
		arr[k]=a;
		k++;
	}
	int len=k;
	int sum1=0,sum2=0;
	for(int i=1;i<len;i++){
		if(arr[i]=='W') sum1++;
		if(arr[i]=='L') sum2++;
		if((sum1>=11 || sum2>=11) and abs(sum1-sum2)>=2){
			cout<<sum1<<':'<<sum2<<endl;
			sum1=0;
			sum2=0;
		}
	}
	cout<<sum1<<':'<<sum2<<endl<<endl;
	sum1=0,sum2=0;
	for(int i=1;i<len;i++){
		if(arr[i]=='W') sum1++;
		if(arr[i]=='L') sum2++;
		if((sum1>=21 || sum2>=21) and abs(sum1-sum2)>=2){
			cout<<sum1<<':'<<sum2<<endl;
			sum1=0;
			sum2=0;
		}
	}
	cout<<sum1<<':'<<sum2<<endl<<endl;
	return 0;
}