C111123313121111121111331333133313331323231333133313113313232212321111   >>    C11112331312111112111133133313331333132323133313331311331323221232111   <<    C111123313121111121111331333133313331323231333133313113313232212321113   >>      C111123313121111121111331333133313331323231333133313113313232212321112   >>