1.   Exactly how it became so widespread still puzzles health officials.

2.   Game and Fish officials are puzzled by the incident.

3.   It puzzles public health officials, this obsession with mosquitoes.

4.   Nevertheless, the announcement puzzled some officials.

5.   Officials were also puzzled by the lack of religious references in the messages, which have instead taken on more of a nationalist tone.

6.   Other conflicting accounts puzzled military officials.

7.   The increase in July subway crime has officials puzzled.

8.   The pump failure puzzled officials, but has been remedied.

9.   What puzzles many tribal officials is why anyone would even want to escape.

10.   After a weekend when tens of thousands of refugees poured out of Kosovo, the exodus slowed to barely a trickle Monday, puzzling relief officials.