C13223313311212111133133313331333132333133112111133132333112312121   >>    C1322331331121211113313331333133313233313311211113313233311231212   <<    C13223313311212111133133313331333132333133112111133132333112312123   >>      C13223313311212111133133313331333132333133112111133132333112312122   >>