Pairwise testing: How to create the table from a text file?

I have a question regarding how to create the table for the pairwise testing. For example, if I have a table with a list of words (each line contains a single word).

E.g.text file contains:

red
blood 
animal

How do I create a table of input with all possible combination then? Would it look something like this? It gets the line number of word and creates all possible outputs. I wanna an output something like this:

| 0 1 2
 -----------
  0 | 0 10 11
  1 | 10 0 21
  2 | 11 12 0