Filter out every fourth row

Long story short...I have a very long list of contacts that I need to cut into thirds....this huge list has been sorted by importance (the top of the list are people that need to be contacted immediately) and there are three of us that need to start going through this list....is there a way to filter the data so that rows 1,4,7,10..etc. go to one list and rows 2,5,8,11,etc. go to a second list and rows 3,6,9,12,etc. go to a third list? This would save me alot of time and I would greatly appreciate any help I can get....since I have never used excel before I really don't know how to search on here using the correct verbage...Thanks