C111123313121111121111331333133313331333131233133313311231233133311321   >>    C11112331312111112111133133313331333133313123313331331123123313331132   <<    C111123313121111121111331333133313331333131233133313311231233133311323   >>      C111123313121111121111331333133313331333131233133313311231233133311322   >>