C11112331312111112111133133313331333132323213331333133312111133133313223131121   >>    C1111233131211111211113313331333133313232321333133313331211113313331322313112   <<    C11112331312111112111133133313331333132323213331333133312111133133313223131123   >>      C11112331312111112111133133313331333132323213331333133312111133133313223131122   >>