[fpc-pascal] best method: multiple three state options in a decision tree

[waldo kitty]

what is the best method of coding a decision tree with options that have three 
states and all options are additive?

clarification: i have a situation with 5 (at this time) options and all 5 are 
three state... each option can be paired with all other options' states but may 
NOT be paired with its own other states...

eg:
optionA : min/max, min, max
optionB : min/max, min, max
optionC : min/max, min, max
optionD : min/max, min, max
optionE : min/max, min, max


optionA can be used as :
   optionA:min/max
   optionA:min only
   optionA:max only
   optionA:min/max AND optionB:min/max
   optionA:min/max AND optionB:min only
   optionA:min/max AND optionB:max only
   optionA:min only AND optionB:min/max
   optionA:min only AND optionB:min only
   optionA:min only AND optionB:max only
   optionA:max only AND optionB:min/max
   optionA:max only AND optionB:min only
   optionA:max only AND optionB:max only
   optionA:min/max AND optionC:min/max
   optionA:min/max AND optionC:min only
   optionA:min/max AND optionC:max only
   optionA:min only AND optionC:min/max
   optionA:min only AND optionC:min only
   optionA:min only AND optionC:max only
   optionA:max only AND optionC:min/max
   optionA:max only AND optionC:min only
   optionA:max only AND optionC:max only
   optionA:min/max AND optionD:min/max
   optionA:min/max AND optionD:min only
   optionA:min/max AND optionD:max only
   optionA:min only AND optionD:min/max
   optionA:min only AND optionD:min only
   optionA:min only AND optionD:max only
   optionA:max only AND optionD:min/max
   optionA:max only AND optionD:min only
   optionA:max only AND optionD:max only
   optionA:min/max AND optionE:min/max
   optionA:min/max AND optionE:min only
   optionA:min/max AND optionE:max only
   optionA:min only AND optionE:min/max
   optionA:min only AND optionE:min only
   optionA:min only AND optionE:max only
   optionA:max only AND optionE:min/max
   optionA:max only AND optionE:min only
   optionA:max only AND optionE:max only

and so on with each additional options and its three states... as you can see, 
the sheer number of combinations is huge!

in my original attempt i started with if/then/else but that got very hard to 
follow very fast... so i decided to implement all the options in a bitmap so i 
could more easily use a case statement and simply list the decimal value of the 
valid bit patterns as the selection option... that is much easier to follow but 
can easily get confused...

it has been many years since i've had to code such a decision tree and my (20+ 
year) old code is not available for me to dig out and (try to) follow... so i'm 
asking how you would handle this situation so as to make it easy to implement, 
easy to grok, easy to follow when reading the code AND easy to expand or shrink 
if/when necessary...

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