Resource for common words in acronyms?

[Domainate.com]

Anyone know of a resource that lists the most common words used in acronyms by the amount of times the word were to pop up in a query of all known acronyms? Even if it doesn't have the actual amount of acronyms containing the word, is there simply a good list out there of common acronym words? I get tired of continually thinking of what I would say a particular letter in a LLL.com could stand for, and so such a list would help a ton. Thanks in advance, and I'll likely award NP for an informative post!