the three-letter group of ABC (5A. *Jackson 5, 1970), OMG (22A. *Usher feat. will.i.am, 2010), BEN (45A. *Michael Jackson, 1972), WHY (59A. *Frankie Avalon, 1959), BAD (12D. *Michael Jackson, 1987), WAR (32D. *Edwin Starr, 1970), LOW (34D. *Flo Rida feat. T-Pain, 2008) and SOS (54D. *Rihanna, 2006). Twelve nine-letter entries dominate