C111123313121111121111331333133313331333131233133313113311211223221   >>    C11112331312111112111133133313331333133313123313331311331121122322   <<    C111123313121111121111331333133313331333131233133313113311211223223   >>      C111123313121111121111331333133313331333131233133313113311211223222   >>