21.   A gun went off and Gillespie and his partner, alerted to the shooting, began chasing the BMW south down several blocks of the Grand Concourse.

22.   A gun went off and Gillespie and his partner, alerted to the shooting, began chasing the stolen BMW south down several blocks of the Grand Concourse.

23.   A gun went off.

24.   After an anxious wait, the gun went off, and I pulled.

25.   But few Enron shareholders knew about them until the gun had gone off.

26.   But the robber had run out of bullets and the gun did not go off.

27.   But trying to get the end of a race to resemble the lineup when the gun went off is a called a fix.

28.   But when the gun goes off and you start competing, you put aside the nervousness.

29.   By the time the gun went off, he was rocking back, trying to get back to a set position.

30.   Confetti guns went off.