Reduce programming for a lot of variables display -lots of combinations, posibilites-

I'm working with thermodynamic cicles, so I have 4 states and 12 variables that are input. (P1, P2, P3, P4, V1, V2....T1...)

If a variable is missing, it gets calculated and then displayed in a message box, I can have one variable missing from each state, so I can have from 1 to 4 variables missing. I want to display the calculated variables in a message box, but I want it to be a single message box if there are 2, 3 or 4 variables missing (I do know how to do this). What I want to know is if there is a simplier way to program all the posibilities with some sort of repetition structure or something.

I don't know if I made my point very clear, so I'll repeat it

I have 12 variables (P1, P2, P3, P4, V1, V2, V3, V4, T1, T2, T3, T4), 3 for each state, so 4 states, each state can be missing one variable, for example, state 1 has P1, V1 and T1 conditions. State 1 may miss any of those 3 variables and it can be calculated and displayed. One of the 3 properties from each state can be missing, so I can have from 0 to 4 variables displayed. I want to display all the posibilities in a single message box without having to program so much, because there are over 100 combinations. Is there a simplier way?

[Walter Roberson]

Each state can be:

A B C D
A B C
A B D
A C D
B C D

which is 5 possibilities independent of the other states. There are 4 states, so there are 5^4 = 625 possibilities.

Listing all of those possibilities individually for a message is not going to be productive.