21.   Before it happened.

22.   A clearer picture of what happened before the crash on Tuesday began to emerge Wednesday night.

23.   A Nova Scotia government official said it will happen before next Wednesday.

24.   Accounts differ about what happened before Angel Torres, a building superintendent, was shot.

25.   After all, it has happened before to Bobo.

26.   Alan Lipton lived, but he is in a nursing home with severe brain damage, unable to care for himself or remember what happened five minutes before.

27.   All that happened before lunch.

28.   All that happened well before Gates wrote his first litigious e-mail message.

29.   All of this happened before lunch on the first day.

30.   All of this, of course, is speculation because nothing of this scale has ever happened before.