C11112331312111112111133133313331333132323213331333133313121133132322333321   >>    C1111233131211111211113313331333133313232321333133313331312113313232233332   <<    C11112331312111112111133133313331333132323213331333133313121133132322333323   >>      C11112331312111112111133133313331333132323213331333133313121133132322333322   >>