1.   He awoke with a slight headache and a keen appetite, a very unusual combination for him.

2.   Thus the combination of positive feed-back with the rule defined above has the making of a device for detecting unusual combinations.

3.   The unusual combination of symptoms made accurate diagnosis difficult.

4.   An unusual combination, perhaps.

5.   An unusual combination of civil libertarians on the right and left has just deleted that and other dangerous sections from the legislation.

6.   An unusual combination of free and managed trade has also increased auto sales and production here.

7.   An unusual combination of gumption and guilt had gotten her to this point.

8.   As it turns out, it is an easily acquired taste, as this unusual combination of lamb with fennel and bitter greens shows.

9.   A coming-of-age novel takes a number of Gothic twists in this unusual combination by an original novelist.

10.   But her real strength comes in more unusual combinations, like fennel, taleggio and cardamom.