C31231211113313121211113313331333133313311211331333132312233231   >>    C3123121111331312121111331333133313331331121133133313231223323   <<    C31231211113313121211113313331333133313311211331333132312233233   >>      C31231211113313121211113313331333133313311211331333132312233232   >>