public class RecursionExercise2
{
  public static void main (String [] args)
  {
    methodB(3);
	}
	 public static void methodB(int n)
	 {
	   if (n < 1)
		   System.out.println ('B');
			else
			{
			  System.out.println ('R');
			  methodB(n-1);
			}
			}
}