C111123313121111121111331333133313331333133313331333133313331311211112123121   >>    C11112331312111112111133133313331333133313331333133313331333131121111212312   <<    C111123313121111121111331333133313331333133313331333133313331311211112123123   >>      C111123313121111121111331333133313331333133313331333133313331311211112123122   >>