#include<bits/stdc++.h>
using namespace std;
int f[2]={11,21},a[25*2500+10],n=0;
char tmp;
int read(){
	int ret=0,f=1;char ch=getchar();
	while (!isdigit(ch)) {if (ch=='-')f=-f;ch=getchar();}
	while (isdigit(ch)) ret=(ret<<3)+(ret<<1)+(ch&15),ch=getchar();
	return ret*f;
}
int main(){
	while(1){
		scanf("%c",&tmp);
		if(tmp=='E')break;
		else if(tmp=='W')a[n++]=1;
		else if(tmp=='L')a[n++]=0;
	}
	for(int i=0;i<2;i++){
		int w=0,l=0;
		for(int j=0;j<n;j++){
			w+=a[j];l+=1-a[j];
			if((max(w,l)>=f[i])&&abs(w-1)>=2){
				printf("%d:%d\n",w,l);w=l=0;
			}
		}
		printf("%d:%d\n",w,l);
		printf("\n");
	}
	return 0;
}