combined.txt = most ip's combined on 1 list(very large use caution due to size)
short-simple.txt = a nice short list with big blocks
short-w-africa.txt = expanded short and simple with africa
africa-exploits.txt = expanded short and simple with africa and exploits

Recommended:
Use short-simple.txt file or short-w-africa.txt file and 
copy and paste the contents into your main .htaccess file.

Backup your original .htaccess file first.

After making the changes, verify your site loads and 
you recieve no error or no 500 error.

If you receive an error restore original .htaccess 
file and verify you copied and pasted correctly. 
Make sure no character is missing or on an new line, 
and try again.


Additionally have a look in the original-info folder 
to see the complete lists from various parts of the world. 
You may consider combining or adding some of these to 
your .htaccess in the future.