C13223313311212111133133313331333133313232233133313311213231221   >>    C1322331331121211113313331333133313331323223313331331121323122   <<    C13223313311212111133133313331333133313232233133313311213231223   >>      C13223313311212111133133313331333133313232233133313311213231222   >>