R p 1 s

R p 1 sR p 1 sR p 1 sR p 1 sR p 1 sR p 1 s
R p 1 sR p 1 sR p 1 sR p 1 sR p 1 sR p 1 s
R p 1 sR p 1 sR p 1 s