If you are asking how do I get/select/determine what numbers to play for the term, I have to say that is a secret
If you are asking why the set is to be played for ten draws in a row as opposed to predicting a different set for each draw then I have some info.
When I'm forecasting numbers to come up in the future based upon an analysis of number sets that have occurred in the past, I'm predicting them to show up "soon" in the draw results, not necessarily in "exactly" the very next draw. LT's top 20 pool of numbers are targeted for the near future and would not work as well if they were confined to just a 1 draw chance of occurrance.
It is understood that the whole set of 49 numbers would generally all show up at least once within an approximate range of twenty five draws - not that there aren't unusual cases of numbers being out in the cold for 60+ draws.
LT's top 20 takes this into account and presents a set to cover 10 of that 25 draw range.
The system has worked well. It is the only system that has predicted all 7 of the draw numbers not once but twice.
In principle I agree your concept and the predictions for the next 3-4 draws will only fetch matching of 2nd level or 3rd level. So, to hit a jackpot particular draw analysis is the very best as determining the repeat numbers from previous draws. I've a separate customized formula to hit 3 matches in a 649 lotto game, but the minimum betline would be 150 which will definitely have a minimum of 5-10 matches of 3s.
I'll try to work on your line also to see how it performs.