C312322331333132212111133133313331333133312121111331333131132123231121311   >>    C31232233133313221211113313331333133313331212111133133313113212323112131   <<    C312322331333132212111133133313331333133312121111331333131132123231121313   >>      C312322331333132212111133133313331333133312121111331333131132123231121312   >>