C13223313311212111133133313331333133313233121333132313331311331323112123212121   >>    C1322331331121211113313331333133313331323312133313231333131133132311212321212   <<    C13223313311212111133133313331333133313233121333132313331311331323112123212123   >>      C13223313311212111133133313331333133313233121333132313331311331323112123212122   >>