Instead you should design pick e.g. like this: I really like territory X, I'll place it as my first pick. In case I would not get it, I would like to get territories Y and Z, I'll pick tehm as 2, 3. But if I somehow get X and miss Y and Z, I would rather have ..., but if I get X,Z and miss Y, I would want ..., so I need to place territory Z as my fourth pick, and so on.
Agree with timon. It's better if you refine the process behind picks rather to attempt to cover every scenario. This strategy is especially useful on team games when you're trying to cover a map as a team.