#include <bits/stdc++.h>

#pragma GCC optimize("Ofast")
using namespace std;

void solve(int cs) {
  int n;
  cin >> n;
  n %= 4;
  string s = "RGB";
  while (n--) {
    swap(s[0], s[1]);
    if(n > 0) {
      swap(s[1], s[2]);
      n -= 1;
    }
  }
  cout << s << "\n";
  
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int tc = 1;
  cin >> tc;
  for (int cs = 1; cs <= tc; cs++) {
    solve(cs);
  }
  return 0;
}