C11112331312111112111133133313331333132323213331333131121333221211   >>    C1111233131211111211113313331333133313232321333133313112133322121   <<    C11112331312111112111133133313331333132323213331333131121333221213   >>      C11112331312111112111133133313331333132323213331333131121333221212   >>