#include<iostream>
#include<vector>
#include<string>
#include<cmath>
using namespace std;

int main()  {
    string a[]={"RGB","GRB","GBR","BGR","BRG","RBG"};
    int m,n;
    cin>>m;
    for(int i=0;i<m;i++){
      cin>>n;
      cout<<a[n%6]<<endl;
    }
    return 0;
}