In Windows, how do I do a mass search-replace where I search for a phrase and then copy the phrase with several different phrases?

Question

I use Windows and I use a variety of text editors (NotePad++, Vim, etc). Any application works (since I'm willing to try any of the applications I have).

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This is what I want to search.

vikenSurfaceTemps = vikenSurfaceTemps(vikenSurfaceTemps < 30);
MaxvikenDepths = MaxvikenDepths(vikenSurfaceTemps < 30);

I want to search/replace viken with a list of example words {undin,Soern,comet} and even more words, preferably with as little extra effort as possible.

So I'd like my final output to be something like this:

vikenSurfaceTemps = vikenSurfaceTemps(vikenSurfaceTemps < 30);
MaxvikenDepths = MaxvikenDepths(vikenSurfaceTemps < 30);
SoernSurfaceTemps = SoernSurfaceTemps(vikenSurfaceTemps < 30);
MaxSoernDepths = MaxSoernDepths(vikenSurfaceTemps < 30);
cometSurfaceTemps = cometSurfaceTemps(vikenSurfaceTemps < 30);
MaxcometDepths = MaxcometDepths(vikenSurfaceTemps < 30);