#include <stdio.h>
#include <stdlib.h>

int main(void)
{
	int  j = 0, k = 0;
	char c;
	int ans11[10000][2] = {{0}};
	int ans21[5000][2] = {{0}}; 
	while ((c = getchar()) != 'E')
	{
		switch (c)
		{
			case 'W': ans11[j][0]++, ans21[k][0]++; break;
			case 'L': ans11[j][1]++, ans21[k][1]++; break;
		}
		if ((ans11[j][0]>= 11 || ans11[j][1] >= 11) && abs(ans11[j][0] - ans11[j][1]) >= 2)
			j++;
		if ((ans21[k][0]>= 21 || ans11[k][1] >= 21) && abs(ans21[k][0] - ans21[k][1]) >= 2)	
			k++;
	}
	for (int j0 = 0; j0 <= j; j0++)
		printf("%d:%d\n", ans11[j0][0], ans11[j0][1]);
	putchar('\n');
	for (int k0 = 0; k0 <= k; k0++)
		printf("%d:%d\n", ans21[k0][0], ans21[k0][1]);
	return 0;
}