C312322331333132212111133133313331333133312121111331311331333231333131123321221   >>    C31232233133313221211113313331333133313331212111133131133133323133313112332122   <<    C312322331333132212111133133313331333133312121111331311331333231333131123321223   >>      C312322331333132212111133133313331333133312121111331311331333231333131123321222   >>