21.   A simple genetic test can help doctors accurately predict whether people with common white patches inside their mouths are likely to develop deadly oral cancer.

22.   He wore a white patch with an embroidered red ribbon on his blue cosmonaut uniform to symbolize the fight against AIDS.

23.   His head was wrapped in bandages, a large white patch covering his left eye and a stiff red brace stabilizing his neck.

24.   Many signs still bear the distinctive red and blue Pepsi logo or green Castrol motor oil logo, with big white patches where the names were.

25.   The race was run on man-made snow, on a white patch amid mostly dry, barren mountains.

26.   The whoosh of incoming artillery fire and white patches on the stone peaks around the troops signaled Ethiopian troops still held Senafe, eight miles to the south.

27.   Thousands of fishermen brought out their small wooden boats, throwing in white patches of cloth in a desperate fight to soak up the sludge.