C111123313121111121111331333133313331333131233133313233313231322211   >>    C11112331312111112111133133313331333133313123313331323331323132221   <<    C111123313121111121111331333133313331333131233133313233313231322213   >>      C111123313121111121111331333133313331333131233133313233313231322212   >>