123

#include <bits/stdc++.h>
using namespace std;
char a[100005];

int main() {
//		freopen("ball.in", "r", stdin);
//	freopen("ball.out", "w", stdout);
	int b = 0;
	char c;
	while ((c = getchar()) != '\0') {
		if (c == 'E')
			break;
		else {
			a[b] = c;
			b++;
		}
	}
	int x = 0, y = 0;
	for (int i = 0; i < b; i++) {
		if (a[i] == 'W')
			x++;
		if (a[i] == 'L')
			y++;
		if ((x >= 11 || y >= 11) && abs(x - y) >= 2) {
			printf("%d:%d\n", x, y);
			x = y = 0;
		}
	}
	printf("%d:%d\n", x, y);
	x = y = 0;
	cout << endl;
	for (int i = 0; i < b; i++) {
		if (a[i] == 'W')
			x++;
		if (a[i] == 'L')
			y++;
		if ((x >= 21 || y >= 21) && abs(x - y) >= 2) {
			printf("%d:%d\n", x, y);
			x = y = 0;
		}
	}
	printf("%d:%d\n", x, y);
	x = y = 0;
	return 0;
}