1.   Once when a pig pen was installed next door, they sent tap messages by oinking like a pig, and their captors never caught on.

2.   Playing a football game there was like staging a ballet in a pig pen after an all-day rain.

3.   Some battlements have been dismantled by villagers to build homes and pig pens, according to the official Chinese press.

4.   When he awoke, he discovered he was in a pig pen.

5.   Nearby, a dozen health officials and volunteers, covered from head-to-toe, sprayed clouds of chemicals around a huge pig pen.

6.   The CDC researchers who came here tramped through pig pens in the worst-hit areas wearing gloves, gowns and battery-operated respirators.

7.   They have spent weeks tramping through pig pens and farming villages in the worst-hit areas.