Here she is again, strolling K Street, her black skirt very short, her black top very tight. It's Wednesday, 11:35 p.m. "Too early to be out here," Tanekea says. Still, she stands on a corner of Third and K streets NW, just as she did Monday night, hoping to turn a trick: maybe $40 or $50 for oral sex, she says, and "more" for "something more." With long hair, long legs and freshly shaved skin, Tanekea, 21, heads to Fifth Street, then back to Third. The sidewalks are dimly lighted. Two patrons from the nearby Louis' Rogue Go Go Lounge...