C13223313311212111133133313331333133313232233133313331323221211111333312121   >>    C1322331331121211113313331333133313331323223313331333132322121111133331212   <<    C13223313311212111133133313331333133313232233133313331323221211111333312123   >>      C13223313311212111133133313331333133313232233133313331323221211111333312122   >>