C11112331312111112111133133313331333132323213331333133313133231311211   >>    C1111233131211111211113313331333133313232321333133313331313323131121   <<    C11112331312111112111133133313331333132323213331333133313133231311213   >>      C11112331312111112111133133313331333132323213331333133313133231311212   >>