If I put in two prefrences, one looking for trips equal to 4 days with Sat, Sun off and the other with trips equal to 3 days with Sat, Sun off I come up with a total of 166 pairings. That's out of 885 total pairings. Just saying that only 20% of the trips that are 3/4 days do not touch weekends. It's an odd make up of trips that are mostly day lines and 2 days. Different than most months.