C111123313121111121111331333133313331333132232233131211111312312121   >>    C11112331312111112111133133313331333133313223223313121111131231212   <<    C111123313121111121111331333133313331333132232233131211111312312123   >>      C111123313121111121111331333133313331333132232233131211111312312122   >>