C11112331312111112111133133313331333132323213331333131211113322232132211   >>    C1111233131211111211113313331333133313232321333133313121111332223213221   <<    C11112331312111112111133133313331333132323213331333131211113322232132213   >>      C11112331312111112111133133313331333132323213331333131211113322232132212   >>