We could simply ask the administrators, but, just for fun, we could program an algorithm such as the following :

#1 get(the_latest_post, from_the_server)  
#2 modify its address by adding a small fixed number 
(manually adjust this small number to get one of the next posts before they can be deleted)  
#3 get(this_next_post, from_the_server)

Repeating these steps a few times and keeping statistics should allow to answer experimentally the question 😋