C111113331333132322331333133313331333133313121111331333121111121111331311223121   >>    C11111333133313232233133313331333133313331312111133133312111112111133131122312   <<    C111113331333132322331333133313331333133313121111331333121111121111331311223123   >>      C111113331333132322331333133313331333133313121111331333121111121111331311223122   >>