most places that i know of offer 5 on 2 off (during the week until you have a lot of seniority) and 6 on 2 off.
programs offered are 6 on three off (which you usually run your 70 hours out in 5.5 days and then go home for 3.5, 4 on 4 off, 5 on 5 off, 7 on 7 off, 3 and 2 which you run 70 hours out, go home for 34 hours or so and run five more days then go home for a week off every third week, also set runs home every day or night. i'm sure there are more that i'm unaware of at different distribution centers although no runs keep you out more than a week. seniority (longevity) rules and some distribution centers have more programs to offer the lower seniority drivers while others don't.