C312312111133131212111133133313231333133313223313233311232311331   >>    C31231211113313121211113313331323133313331322331323331123231133   <<    C312312111133131212111133133313231333133313223313233311232311333   >>      C312312111133131212111133133313231333133313223313233311232311332   >>