#include<stdio.h>
int main()
{
	int n;
	scanf("%d", &n);
	int i, j;
	char s[102];
	char t[7][16] = { "Red","Orange","Yellow","Green","Cyan","Blue","Violet" };
	int cnt[7][2];
	for (i = 0; i < 7; i++)
		cnt[i][0] = cnt[i][1] = 0;
	for (i = 0; i < n; i++)
	{
		scanf("%s", s);
		for (j = 0; j < 7; j++)
			if (s[0] == t[j][0])
				cnt[j][0]++;
	}
	for (i = 0; i < n - 1; i++)
	{
		scanf("%s", s);
		for (j = 0; j < 7; j++)
			if (s[0] == t[j][0])
				cnt[j][1]++;
	}
	for (i = 0; i < 7; i++)
		if (cnt[i][0] > cnt[i][1])
			printf("%s\n", t[i]);
	return 0;
}