include

include

using namespace std;

void nhy(char(&a)[65000], int nhy, int i) {

int w = 0, l = 0;
for (int j = 0; j < i; j++) {
	if (a[j] == 'W') {
		w++;
	}
	if (a[j] == 'L') {
		l++;
	}
	if ((w >= nhy || l >= nhy) && abs(w - l) >= 2) {
		cout << w << ':' << l << endl;
		w = 0;
		l = 0;
	}

}
cout << w << ':' << l << endl;

}

int main(int nhy1, char **argv) {

char a[65000] = {0};
int i = 0;

while (true) {
	i++;
	cin >> a[i];
	if (a[i] == 'E') {
		break;
	}
}

nhy(a, 11, i);
cout << endl;
nhy(a, 21, i);
return 0;

}