#include <iostream>
using namespace std;

string ans[5] = {"RGB", "GRB", "GBR", "BGR", "BRG"};

int main() {
  ios_base::sync_with_stdio(0); cin.tie(0);
  int tt; cin >> tt; while (tt--) {
    int n; cin >> n; cout << ans[n % 5] << '\n';
  }
  return 0;
}