Sherlock Holmes and Dr. Watson were called to a park in London to investigate a crime involving an unusual tree. The ABC Tree, as it was called, had the unique ability to actually grow all the letters of the alphabet. Shockingly, however, it seemed that someone had plucked most of the letters from the tree.

Watson approached the tree and examined it closely. "My goodness, Holmes!" he exclaimed. "It appears that some ne'er-do-well has stolen all but the twelfth, thirteenth, and fourteenth letters of the alphabet. What do you make of that, Holmes?"

Holmes sucked at his pipe contemplatively for a moment before answering, "Why, it's an LMN Tree, my dear Watson."