There have been several quiz threads recently, so I hope that you'll be happy helping with mine.

The quiz has the following format:

Question: 4 H_ of the A_
Answser: Four horsemen of the apocolypse

Question: 4 S_ in a D_ of C_
Answer: Four suits in a deck of cards

You get the idea. The one that we can't get, is:

13 L_ in a S_

It's in the category of 'English' if that helps

Thanks a lot,

Ed