C111123313121111121111331333133313331333131233133313211232322211   >>    C11112331312111112111133133313331333133313123313331321123232221   <<    C111123313121111121111331333133313331333131233133313211232322213   >>      C111123313121111121111331333133313331333131233133313211232322212   >>