C11112331312111112111133133313331333132323213331333133313331312111112211321   >>    C1111233131211111211113313331333133313232321333133313331333131211111221132   <<    C11112331312111112111133133313331333132323213331333133313331312111112211323   >>      C11112331312111112111133133313331333132323213331333133313331312111112211322   >>