C132233133112121111331333133313331333132313231332133313231312121   >>    C13223313311212111133133313331333133313231323133213331323131212   <<    C132233133112121111331333133313331333132313231332133313231312123   >>      C132233133112121111331333133313331333132313231332133313231312122   >>