C111123313121111121111331333133313331333131233133313221311311221   >>    C11112331312111112111133133313331333133313123313331322131131122   <<    C111123313121111121111331333133313331333131233133313221311311223   >>      C111123313121111121111331333133313331333131233133313221311311222   >>