C312322331333132212111133133313331333133312121111121111133313223123211311   >>    C31232233133313221211113313331333133313331212111112111113331322312321131   <<    C312322331333132212111133133313331333133312121111121111133313223123211313   >>      C312322331333132212111133133313331333133312121111121111133313223123211312   >>