11.   Short selling is a common trading tactic in which an investor borrows shares and sells them, buying them back later to return to the lender.

12.   Short selling is a common trading tactic, in which an investor borrows shares and sells them, buying them back later to return them to the lender.

13.   Some U.K. institutional investors lobbied against the package, which WPP executives defended as a common tactic of improving company returns.

14.   Such disclosure, known as defensive publishing, is an increasingly common tactic for protecting intellectual property.

15.   Such smokescreen performances designed to duck voter accountability are a common political tactic.

16.   The delegate-selection process prevented candidates from packing the event with supporters flown in from other states, a common tactic in other presidential preference polls.

17.   The employees never visit potential customers at their home early in the morning or late in the evening, a common sales tactic at securities companies.

18.   The most common tactic was to order a copy of a ticket from the Parking Violations Bureau.

19.   The report was immediately picked up by Israeli news outlets, a common tactic to elude military censorship.

20.   Their most common tactic, which has emerged in South Florida, is to create fake companies that seek reimbursement for fictional treatments of real patients by real doctors.