We have lots of 12 day trips on 4 weeks months. I personally love these trips as its a tough commute (9 hrs from NW CO to get to MEM) and I only need to do it once. We sometimes have 13 to 15 day trips on 5 week months, but unless they have deadheads on the fron, back or both, I've learned to avoid them as they get a little too long for me! I don't imagine I'll see too many of those trips soon as a junior Capt., unless I get lucky with a secondary line!