31.   The rail lines move faster than the cars on surrounding streets and are standing-room-only in rush hour.

32.   The surrounding streets are similarly blighted here, and the concrete towers of a recently emptied public housing project loom nearby.

33.   This urban grid echoes the larger grid of the surrounding streets and buildings, while the trees seem trapped, subject to man-made geometry.

34.   Traffic backs up badly on surrounding streets.

35.   Police blocked surrounding streets with their cars and tire-shredding spikes.

36.   Police officers shut down surrounding streets, only allowing a constant flow of ambulances to come or leave the scene.

37.   Police said Monday that they were not stationed inside the building but on the premises and the surrounding streets.

38.   Police sealed off the surrounding streets while they searched for clues.

39.   Outside, policemen surrounded the building and blocked surrounding small streets.