Give us some context so we better understand what you want to do. We can endlessly play 20,000 questions to try and home in on an efficient solution for your data and objective. Or you can tell us what you need to achieve so we can determine things like "Does it always match from the start" and "are they really only 30 character sentences".

The more you tell us about your actual problem the better we are likely to be able to help you.