Sn p

Sn pSn pSn pSn pSn pSn p
Sn pSn pSn pSn pSn pSn p
Sn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn pSn p