C31231211113313121211113313331333133313311211331333133313231221111   >>    C3123121111331312121111331333133313331331121133133313331323122111   <<    C31231211113313121211113313331333133313311211331333133313231221113   >>      C31231211113313121211113313331333133313311211331333133313231221112   >>