11.   Stretching out in the grass to watch the clouds drift by.

12.   The clouds are drifting.

13.   When Danielle and Jason came down the driveway, the vapor cloud was drifting along this creek bed.

14.   A thick smog cloud has drifted over neighboring Malaysia, southern Thailand and parts of the Philippines, as well as Singapore and Brunei.

15.   Scattered clouds drifted into Virginia, Pennsylvania, New Jersey and across portions of the Ohio Valley.

16.   So far, just one cloud has drifted across this heady horizon.

17.   Some clouds drifted into the Ohio Valley, western Great Lakes and upper Mississippi Valley.

18.   The cloud then drifted toward a nearby primary school, Mexico City newspapers said.

19.   Then suddenly the dark clouds drifted away, the sun broke though and the wind stilled.

20.   Thirty-two die immediately and a radioactive cloud drifts over Europe.