How to implement pagination on number and alphabet at the same time [CI3]

Pagination on the number of pages but if i want to view data start with K, i click on 'K' and its jump to page 33 which is a page that starting with k letter. How to implement something like this? 

select all data to find the K starting point look waste of resource (because we need to find other 25 letter starting point too) any better way to implement this?

for example: *REDACTED*