1.   During the Westland affair he provided that rare occasion, the resignation of a cabinet minister on a matter of principle.

2.   Except for rare occasions, he gave up spying.

3.   I only saw Helen on the rare occasions when I went into her shop.

4.   It was a special moment, a rare occasion to see them walking.

5.   On rare occasions one even sings, but haltingly.

6.   On rare occasions, owners fail to redeem their property and the county government deeds it over to the investor.

7.   On rare occasions, some greyhounds race beyond their sixth birthday.

8.   On rare occasions, they preach.

9.   On the rare occasion where we need the additional quality of typesetting the only thing we need to take are the disks.