Permutations of a list (groups of 3)

[xlwho]

Is there any way to determine all possible unique combinations (or sets) of any 3 strings in a table? I need to make a master set list from a list of strings which could be over 100 elements long.

Once I have a result set, I need to get rid of any groups which have a value contained in another group.

Example:
cells A1 through B100 contain:
Item1 45
Item2 50
Item3 98
...
Item100 75

Result set would contain groups of any 3 item combinations where the corresponding "B" value is within a certain range (between 40 and 80), while also trying to create sets with the lowest possible sum (placed in the 4th column) of the 3 numbers.

One possible combination would be:
Item1 Item2 Item100 170

etc...

I need to list all possible combinations, without re-using an element from a previous (lower sum) combination that matched the criteria. Any ideas?