Trying several numbers at various positions within words in a wordlist after combine?

Hey all,

     I've been reading for the better part of a week here and finding myself answering my own questions with just the proper reading.  One I'm unable to answer thus far however, is let's say I have created a word list with the combinator utility.  Now I want to process that using some rules (the top_5000.rule shared on the forum).  However, perhaps I wanted to add the number "1001" at every possible position because I know it's a strong possibility it's contained in the password, just not *where*.  Is there a way to do this?

     Thanks a lot,

MP