Answer: construction program
In all construction programs you can put large complete systems and ask for 0-12 limits.
As an example, I remind the old people that we copied the proposed systems of the agencies from the newspapers and grouped them.
More specifically and as your example I mention that from Proporama (there is no longer the newspaper of Primikirios) those that were 5 doubles and 5 triples (and 3 standard, so a total of 13 matches) with a total of 7776 columns each, we set a limit of 5 to 11. (Those programs that do not keep the triple in the condition, delete it and adjust the limit to from-to).
This was obviously a simple way to "direct" the final columns we would keep for printing, in a remarkable high profit area.
These systems were real, but they came from Monday, the newspaper came out on Tuesday and the games took place on Sunday. So there were people who copied the "fresh" FULL ('not variable) systems from the windows of the agencies and cut extra columns.
Another way was of course the cutting of the columns, which had been "produced" by various systems in terms of PC.