1.  As you drop from the highveld to the semitropical coast, Africa, for unclear reasons, has an incredible profusion of species.

2.  De La Hoya pulled out shortly before an agreement was reached for unclear reasons.

3.  Diaphragms add to the risk for unclear reasons.

4.  The commission that was supposed to write the rules has been stymied, for unclear reasons.

5.  There, for reasons still unclear, some Republicans were allowed to vote in the Democratic primary.

6.  Three months later, for reasons still unclear, she left him.

7.  But for reasons still unclear to the United Nations, the situation began to deteriorate last month.

8.  For reasons unclear, he unexpectedly followed on a fifth plane, a Saudi airliner.

9.  For unclear reasons, Chaiyawat sat on that confidential report without giving any immediate feedback.

10.  For reasons still unclear, the man apparently entered the tunnel sometime over the weekend on the English side, police said.