C312322331333132212111133133313331333133312121111331333133121121   >>    C31232233133313221211113313331333133313331212111133133313312112   <<    C312322331333132212111133133313331333133312121111331333133121123   >>      C312322331333132212111133133313331333133312121111331333133121122   >>