These will usually be the simplest deals, not ones where you need several of one coupon to make it work. They are listed in least ECBs "lost" to the most "lost" and only go up to loosing $5 extra bucks. Only the coupons which will make them the amount shown will be listed--not all that are available. (Clarification: "Lost" is used to note how many extra bucks you will use up on the deal--if you pay with a $5 extra buck and earn a $3 extra buck you've "lost" $2; some people refer to it as "burning" extra bucks).
They are listed from least extra bucks lost after you receive the new extra bucks to most lost. They are not listed necessarily in the least extra bucks needed to do the transaction. Also, some of the deals will be better if you have more than one of each coupon--but I always includes just one insert or two printable coupons in her scenarios.