C11112331312111112111133133313331333132323213331333133311233133313113321   >>    C1111233131211111211113313331333133313232321333133313331123313331311332   <<    C11112331312111112111133133313331333132323213331333133311233133313113323   >>      C11112331312111112111133133313331333132323213331333133311233133313113322   >>