C111123313121111121111331333133313331333131233133313232313332233133321111   >>    C11112331312111112111133133313331333133313123313331323231333223313332111   <<    C111123313121111121111331333133313331333131233133313232313332233133321113   >>      C111123313121111121111331333133313331333131233133313232313332233133321112   >>