It really does depend on the situation, what I'm going to shoot.
Just to cover bases in general:
17-35
28-70
80-200
400
But then, depending on what I'm shooting, the 300 might replace the 400. Or a speciality lens might come in, such as an 85/1.4 or the 85/2 PC. Macro work would be the 60, 105, 200, 70-180...
Low light, would be the 85/1.4, 50/1.4, 28/1.4 and 135/2 or 200/2.