C3123121111113313121111331333133313223313121111121111331211331323221121211   >>    C312312111111331312111133133313331322331312111112111133121133132322112121   <<    C3123121111113313121111331333133313223313121111121111331211331323221121213   >>      C3123121111113313121111331333133313223313121111121111331211331323221121212   >>