Falling for the second straight session, the Sensex at the Bombay Stock Exchange ended 75 points, or 0.4 percent lower, at 19,612, on Wednesday, on continued profit-booking, amid concerns that high global crude oil prices would eventually hurt corporate earnings. The Nifty at the National Stock Exchange lost 18 points, or 0.3 percent, to 5,892.Stock markets in Japan, China, Hong Kong, South Korea and Singapore ended mixed.