C3123121111121111131213331333133313331333133313332112323132333132332321321   >>    C312312111112111113121333133313331333133313331333211232313233313233232132   <<    C3123121111121111131213331333133313331333133313332112323132333132332321323   >>      C3123121111121111131213331333133313331333133313332112323132333132332321322   >>