C132233133112121111331333133313331333132313231332121111331323232212121   >>    C13223313311212111133133313331333133313231323133212111133132323221212   <<    C132233133112121111331333133313331333132313231332121111331323232212123   >>      C132233133112121111331333133313331333132313231332121111331323232212122   >>