C312312111133131212111133133313231333133313331323221211111133133313311213111   >>    C31231211113313121211113313331323133313331333132322121111113313331331121311   <<    C312312111133131212111133133313231333133313331323221211111133133313311213113   >>      C312312111133131212111133133313231333133313331323221211111133133313311213112   >>