int p[109],i,j,x;
P(f){
  for(j=1;j<(f?2:*p);j++)
    x=p[j],
    p[j]=p[j+1],
    p[j+1]=x;
  putchar(82+f);
}
main(){
  for(;~scanf("%d",p+i++););
  for(i-=3;i--;){
    for(;p[1]!=i;)
      P(0);
    for(;p[2]!=i+1;P(0))
      P(1);
  }
}