C312322331333132212111133133313331333133312121111331311331333233231333211231   >>    C31232233133313221211113313331333133313331212111133131133133323323133321123   <<    C312322331333132212111133133313331333133312121111331311331333233231333211233   >>      C312322331333132212111133133313331333133312121111331311331333233231333211232   >>