C312322331333132212111133133313331333133312121111331333112121111   >>    C31232233133313221211113313331333133313331212111133133311212111   <<    C312322331333132212111133133313331333133312121111331333112121113   >>      C312322331333132212111133133313331333133312121111331333112121112   >>