i want to find out all such unique values in a spreadsheet(with repeated values), where the difference between the row number in which it has occurred and the previous row number in which it has occurred is less than or equal to 3.....here it should be noted that, the rows are used as columns since rows have numbers which are easy to calculate on.....by this i mean,
find unique values, find number of occurrences(frequency) of each value, find out all such values where difference between row number and previous row number it has occurred is less than or equal to 3.
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