C111123313121111121111331333133313331333131233133313233313232133211111   >>    C11112331312111112111133133313331333133313123313331323331323213321111   <<    C111123313121111121111331333133313331333131233133313233313232133211113   >>      C111123313121111121111331333133313331333131233133313233313232133211112   >>