Fumbling about with the style rules of English

These style rules come from a variety of sources, and have been adapted a bit by me. The principle with all of these rules is that each 'rule' contradicts itself. The original versions have been variously attributed to:

• The Fumblerules of Grammar by William Safire, The New York Times Magazine, Nov 4, 1979,
• The Little English Handbook by Edward P. J. Corbett
• How To Write Good by Frank Visco

There are over forty. Here is a real challenge for advanced students, an exercise based on a sample of them.