C13223313311212111133133313331333132333133313331333112112231231   >>    C1322331331121211113313331333133313233313331333133311211223123   <<    C13223313311212111133133313331333132333133313331333112112231233   >>      C13223313311212111133133313331333132333133313331333112112231232   >>