C11112331312111112111133133313331333132323213331333133313122212111   >>    C1111233131211111211113313331333133313232321333133313331312221211   <<    C11112331312111112111133133313331333132323213331333133313122212113   >>      C11112331312111112111133133313331333132323213331333133313122212112   >>