I'm not really that knowledgable but I'll tell you what I do know.
many interpretations have been given,some say the allegorical ones are the 'huroof' at the beginning at some chapters like alif lam meem, or qaaf and so on, here it'll probably be that no one but allah knoes their meaning. Others state that its the verses that were replaced by other verses, like the one forbidding drink only when prayer time came, and if a person were drunk then, he couldnt pray until he sobered. Then gradually this was replaced by verses that banned drinking entirely.Here it would be that allah as well as some people who are well grounded in knowledge know.