#include <bits/stdc++.h>
using namespace std;
string s = "";
char c;
void solve(void)
{
    cin >> c;
    while (c != 'E')
    {
        s += c;
        cin >> c;
    }
    int w = 0, l = 0;
    bool flag = true;
    for (int i = 0; i < s.size(); i++)
    {
        if (s[i] == 'W')
            w++;
        else
            l++;
        if (abs(w - l) >= 2 && max(w, l) >= 11)
        {
            flag = false;
            cout << w << ':' << l << '\n';
            w = l = 0;
        }
    }
    if (w != 0 || l != 0 || flag)
    {
        cout << w << ':' << l;
    }
    w = l = 0;
    cout << "\n\n";
    flag = true;
    for (int i = 0; i < s.size(); i++)
    {
        if (s[i] == 'W')
            w++;
        else
            l++;
        if (abs(w - l) >= 2 && max(w, l) >= 21)
        {
            flag = false;
            cout << w << ':' << l << '\n';
            w = l = 0;
        }
    }
    if (w != 0 || l != 0 || flag)
    {
        cout << w << ':' << l;
    }
    return;
}
int main()
{
    // freopen(".in","r",stdin);
    // freopen(".out","w",stdout);
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    solve();

    return 0;
}