#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int main()
{
	char c[70001];
	ll i=0;
	while(true)
	{
		i++;
		cin>>c[i];
		if(c[i]=='E')break;
	}
	ll c1=0,c2=0,c11=0,c21=0;
	for(ll j=1;j<i;j++)
	{
		if(c[j]=='W')
		{
			c1++;
			c11++;
		}
		else if(c[j]=='L')
		{
			c2++;
			c11++;
		}
		
		if(c11==11)
		{
			cout<<c1<<":"<<c2<<endl;
			c11=0;
			c1=0;
			c2=0;
		}
	}
	cout<<c1<<":"<<c2<<endl<<endl;
	c1=0,c2=0;
	for(ll j=1;j<i;j++)
	{
		if(c[j]=='W')
		{
			c1++;
			c21++;
		}
		else if(c[j]=='L')
		{
			c2++;
			c21++;
		}
		
		if(c21==21)
		{
			cout<<c1<<":"<<c2<<endl;
			c21=0;
			c1=0;
			c2=0;
		}
	}
	cout<<c1<<":"<<c2<<endl;
}