31.   The NFL reinstated replay on a one-year trial basis last season.

32.   The program began in February on a two-month trial basis.

33.   The program is being operated on a trial basis.

34.   The trolley will run for three months on a trial basis.

35.   The version the league voted on was for a trial basis and would have been used next season only.

36.   The union replied in court documents that the taping was done on a trial basis and Sportsolution was owed nothing.

37.   These are programs that are intended to be distributed on a free trial basis.

38.   This week, China said it would allow three foreign banks to start conducting local yuan currency business for the first time, on a trial basis in Shanghai.

39.   Time Warner Cable, for example, has introduced HBO on Demand on a trial basis on Long Island and in four cities around the country.

40.   Virgin Atlantic said it would offer the boat service on a trial basis through the end of October.