#include <iostream>
#include <string>

using namespace std;

string ans[] = { "RGB","GRB","GBR","BGR","BRG","RBG" };

int main()
{
    int t, n;
	cin >> t;
	while (t-- && cin >> n)
	{
		cout << ans[n % 7];
		if (t) cout << "\n";
	}
	return 0;
}