C31231211113313121211113313331323133313331333133313311233131133132323221   >>    C3123121111331312121111331333132313331333133313331331123313113313232322   <<    C31231211113313121211113313331323133313331333133313311233131133132323223   >>      C31231211113313121211113313331323133313331333133313311233131133132323222   >>