C13223313311212111133133313331333133313232233133313121121223231   >>    C1322331331121211113313331333133313331323223313331312112122323   <<    C13223313311212111133133313331333133313232233133313121121223233   >>      C13223313311212111133133313331333133313232233133313121121223232   >>