C111123313121111121111331333133313331323231333133313331313233121221   >>    C11112331312111112111133133313331333132323133313331333131323312122   <<    C111123313121111121111331333133313331323231333133313331313233121223   >>      C111123313121111121111331333133313331323231333133313331313233121222   >>