C11112331312111112111133133313331333132323213331333133313112332321321   >>    C1111233131211111211113313331333133313232321333133313331311233232132   <<    C11112331312111112111133133313331333132323213331333133313112332321323   >>      C11112331312111112111133133313331333132323213331333133313112332321322   >>