/*1.可选步数为1-m的连续整数,直接取模即可,SG(x) = x % (m+1); */
#include <iostream>
using namespace std;
int main()
{
int t,i,m,n;
cin>>t;
while(t--)
{
cin>>n>>m;
if(n%(m+1)==0)cout<<"Rabbit"<<endl;
else cout<<"Grass"<<endl;
}
return 0;
}