21.   A line formed behind them.

22.   A line forms.

23.   A line had formed behind me and the shoppers looked impatient.

24.   A line formed.

25.   A long winding line formed at the entrance to the memorial immediately following the ceremony.

26.   But a line formed to snap photos with him.

27.   But this semester, the lines formed earlier than ever -- just two or three weeks into classes.

28.   Customers can tell at a glance where the line forms.

29.   Every time the garbage truck stopped, a line of cars formed, unable to squeeze past.

30.   Exactly two blocks away, another long line had formed.