How to streamread and parse.

I want to use a Streamreader to parse threw a text file to limit words used so that it's not hardcoded and a user could add or remove words allowed.

Example

 1.
 Sector
 Region
 Zone
 Grid
 Quad
 Player
 Choice
     
 2.
 Enemy
 Friend
 Companion
 Player
 You

Now I know that using a stream-reader would work but how do I parse threw till I find the corresponding number and then start reading again after that and then stop again on next number.

I read that a Split function may be of use here but I don't quiet understand how to apply it to this.

Thanks for any input. Here is one of the many simple ways I thought it would work to only end up seeing that it wouldn't work.

 void readTextFile(string file_path)
     {
         StreamReader limitedWords = new StreamReader(UserText.txt);
         
         while(limitedWords != typeof(int))
         {
 
             string line = limitedWords.ReadLine( );
             // Do Something with the input. 
         }
         
         limitedWords.Close( );  
     }