R r 0 1 t

R r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 tR r 0 1 t