FILE - In this May 31, 2018 file photo, Lauren Guo, 12, from Arvada, Colo., competes in the Scripps National Spelling Bee in Oxon Hill, Md. An unremarkable sound can be the toughest thing for spellers to master at the Scripps National Spelling Bee. It's known as the schwa. It sounds like "Uh," and any vowel can make the sound. Spellers have a variety of techniques to figure out unfamiliar schwas, but none of the strategies is foolproof, and sometimes the only things to do are to memorize the word or guess. (AP Photo/Jacquelyn Martin, File)
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