OK so you have 3 co lines, three jacks in each room, each one should have all three lines? Sounds like some kind of a sales office, and I am going to assume you are using 3 line phones at each location?
If this is a limited use application (not permanent) I would loop a 4 pair from between the three jacks in each room, and from the last jack head back to your interface/66 block. That would leave you with 3 - 4 pairs to punch on the 66 block, and room to add one more to go to the interface bringing your dial tone in.
If this is a permanent wiring solution, I would home run a 4 pair from each jack to the 66 block. You would then punch down all the 4 pairs, and punch jumpers down that 'loop' all the white/blue pairs together, then loop all the w/o, etc.
I guess it depends on the application you have and the equipment that will be used.
Good Luck!
It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com