#include<bits/stdc++.h>
using namespace std;
string s;
char c;
int a1,b1;
int a2,b2;
int main()
{
	while(true)
	{
		cin>>c;
		if(c=='E') break;
		s+=c;
	}
	int n=s.size();
	if(n==0) cout<<"0:0\n\n0:0";
	for(int i=0;i<n;i++)
	{
		if(s[i]=='W') a1++;
		else b1++;
		if(abs(a1-b1)>=2&&max(a1,b1)>=11)
		{
			cout<<a1<<":"<<b1<<endl;
			a1=0;
			b1=0;
		}
	}
	if(a1!=0||b1!=0) cout<<a1<<":"<<b1<<endl;
	cout<<endl;
	for(int i=0;i<n;i++)
	{
		if(s[i]=='W') a2++;
		else b2++;
		if(abs(a2-b2)>=2&&max(a2,b2)>=21)
		{
			cout<<a2<<":"<<b2<<endl;
			a2=0;
			b2=0;
		}
	}
	if(a2!=0||b2!=0) cout<<a2<<":"<<b2<<endl;
    return 0;
} 

rt