C11112331312111112111133133313331333132323133313331333133313112133313232223231   >>    C1111233131211111211113313331333133313232313331333133313331311213331323222323   <<    C11112331312111112111133133313331333132323133313331333133313112133313232223233   >>      C11112331312111112111133133313331333132323133313331333133313112133313232223232   >>