I have two columns of data that have repeating values(columns B and D). Both
are the same length. I want to find all the permutations of this data,
specifically the values of column D minus column B.

What I have done so far is made an array of all of the differences that can
exist. My problem is I want to take a value from column 1 of the new array,
then a different value from column 2, etc. without duplicating any of the row
values. I have started to do this using For...next, however with 50 columns
and rows it will be a lot of code to type 50 for...next commands with 50
boolean statements to assure that the data doesn't repeat. Is there a better
way to do this or should I start typing ASAP?