C3123121111121111131213331333133313331333133313331331123232223311   >>    C312312111112111113121333133313331333133313331333133112323222331   <<    C3123121111121111131213331333133313331333133313331331123232223313   >>      C3123121111121111131213331333133313331333133313331331123232223312   >>