61.   The Whitbread Race, for those of you who are not in the know, is a boating event that takes place once every four years.

62.   Under the new law, those responsible for forest fires can be punished with between two and four years in prison.

63.   Written anonymously, the rough-hewn gems of British theater are staged once ever four years in the historic northern city of York.

64.   I feel increasing my level of fitness can prolong my game for three or four years.

65.   The former world number one from Sweden has won all six career meetings with Stoltenberg, including four this year.