1.   And then, for reasons still unknown, Lucas said, he stabbed Rich in the chest and dumped her body in a culvert.

2.   Another trade begat the pick that produced Kedrick Brown, who is still an unknown.

3.   A black rectangle on one wall stands for victims still unknown.

4.   But more than anything, perhaps, still unknown in Arizona.

5.   His party comes later, time and location still unknown.

6.   It was still unknown by Saturday night how many refugees were killed, because the camp was closed off to U.N. officials and journalists.

7.   Or a student still unknown to classmates whose answering machine was filling up with messages from home.

8.   Still another sent him something called a Zircon stud sensor, for reasons still unknown.

9.   The motives for other slayings in May were varied, and some still unknown.

10.   Unlike chinook salmon, whose population off the California coast has surged this year for reasons still unknown to researchers, coho spawn fairly close to the coast.