C31231211111133131211113313231333133313231333132313331333133313232232231   >>    C3123121111113313121111331323133313331323133313231333133313331323223223   <<    C31231211111133131211113313231333133313231333132313331333133313232232233   >>      C31231211111133131211113313231333133313231333132313331333133313232232232   >>