Two Text List Fields - Find value in one and corresponding value in the other Text List

Hi - I have two Text List fields in a table representing tags and their tag id's:

Tag List
Here is sample data             tag1,tag2, tag3

Tag ID List
Here is sample data              8,10,14

There are three tags (tag1,tag2,tag3) and their Tag IDs are 8,10, and 14

I want to search Tag List to find a specific tag, and return the corresponding Tag ID for that Tag.

Is there any way to do this in a formula field?

Thanks

Jeff