Search and replace between strings of placeholder text

[nafets]

Hi guys, how are you all?
encountered a big problem and now I am hoping you can help to solve it...
So basically to build a register for my book using indexmatic I need a list of the words looking kinda like this:
/(wierer)|(Albin Wierer)|(Wierer Albin)/ => Albin Wierer

The Names between the brackets beeing the the variations of the searched for word, the one after the arrow the final word that then gets shown in the index. Now my word list I have to build my index with looks something like this:
Basson;Basson;Berg;Tirol;0;0
Bescul;Bescul;Berg;Tirol;0;0
Borcolapass;Borcolapass;Berg;Tirol;0;0
Buolepass;Buolepass;Berg;Tirol;0;0
Cima di Mezzana;Cima di Mezzana;Berg;Tirol;0;0

And this continues so for about 650 lines.
So basically I have to automate it someway that I can individually replace the semicolons with different type of brackets (i can get rid of the zeros with a normal search and replace). Anyone here any clue how to do that sort of thing?

Cheers and have a good day (or night in my case).