C312322331333132212111133133313331333133312121111121111331122331121   >>    C31232233133313221211113313331333133313331212111112111133112233112   <<    C312322331333132212111133133313331333133312121111121111331122331123   >>      C312322331333132212111133133313331333133312121111121111331122331122   >>