#include<bits/stdc++.h>
using namespace std;
void solve()
{
    string s[]={"RGB","GRB","GBR","BGR","BRG","RBG"};
    int k; cin>>k;
    k %=6;
    cout<<s[k]<<endl;
}

int main()
{
	int t; cin>>t;
	for(int i=1;i<=t;i++)
	{
		solve();
	}
}