NEW YORK (Reuters) -- Shares of Countrywide Financial Corp. dropped as much as 19 percent Wednesday on market rumors the mortgage company has been unable to raise money from the commercial paper market. Countrywide officials were not immediately available for comment. "People are buying Countrywide puts very aggressively on Wednesday off of rumors that the commercial paper market could be closed to them," said William Lefkowitz, options strategist at brokerage firm vFinance Investments. Puts are options that allow an investor to sell a stock at a preset price by a certain date. Another trader attributed the drop in the stock...