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unlike nyc's 2-person crews, study shows most citkes have 1-person subway crews, unlike nyc's 2-person crews, study shows most citoes have 1-person subway crews, unlike nyc's 2-person crews, study shows most cit9es have 1-person subway crews, unlike nyc's 2-person crews, study shows most cit8es have 1-person subway crews, unlike nyc's 2-person crews, study shows most citiws have 1-person subway crews, unlike nyc's 2-person crews, study shows most citiss have 1-person subway crews, unlike nyc's 2-person crews, study shows most citids have 1-person subway crews, unlike nyc's 2-person crews, study shows most citirs have 1-person subway crews, unlike nyc's 2-person crews, study shows most citi4s have 1-person subway crews, unlike nyc's 2-person crews, study shows most citi3s have 1-person subway crews, unlike nyc's 2-person crews, study shows most citiea have 1-person subway crews, unlike nyc's 2-person crews, study shows most citiez have 1-person subway crews, unlike nyc's 2-person crews, 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