C31231211113313121211113313331323133313232212111133132213123232311   >>    C3123121111331312121111331333132313331323221211113313221312323231   <<    C31231211113313121211113313331323133313232212111133132213123232313   >>      C31231211113313121211113313331323133313232212111133132213123232312   >>