I have three columns "A" as well as "B". and its counter (number of the row assigned to the IDs.).
In the column "A" I have unique IDs, in the column "B" the same IDs which however can appear more often 17 times or not it all (Please see the attachment).
I wanto to create odput where between the column "A" and the counter of the column "B" is a table with number of rows (counters) (size #number of vlaues in column A times 17) in which IDs in column A appear in Column B.