#include<iostream>
#include<cmath>
using namespace std;
int f[2] = {11,21};
int a[25 * 2500+10];
int n = 0;
int main()
{
	char tmp;
	while(1)
	{
		cin >> tmp;
		if(tmp == 'E')
		{
			break;
		}
		else if(tmp == 'W')
		{
			a[n++] = 1;
		}
		else
		{
			a[n++] = 0;
		}
	}
	for(int k = 0;k<2;k++)
	{
		int w = 0,l = 0;
		for(int i = 0;i<n;i++)
		{
			w += a[i];
			l += 1 - a[i];
			if((max(w,l)>=f[k])&&abs(w-l)>=2)
			{
				cout << w << ": " << endl;
				w = 0;
				l = 0;
			}
		}
		cout << w << ": "<< l <<endl;
		cout << endl;
	}
	return 0;
}