C13223313311212111133133313331323133313331323131133132233132212121   >>    C1322331331121211113313331333132313331333132313113313223313221212   <<    C13223313311212111133133313331323133313331323131133132233132212123   >>      C13223313311212111133133313331323133313331323131133132233132212122   >>