C132233133112121111331333133313331333132313231332121111123312121   >>    C13223313311212111133133313331333133313231323133212111112331212   <<    C132233133112121111331333133313331333132313231332121111123312123   >>      C132233133112121111331333133313331333132313231332121111123312122   >>