Note that the first five rules were introduced in an earlier paper.

The 1973 season saw new rules introduced to increase car safety.

Why did we need to wait for all this to happen in order to introduce rules?

This rule was introduced in 1502 and continued until about 1522.

In 2011, a new rule was introduced for safety reasons.

In recent years, however, the Government has introduced new rules which help considerably.

A new rule was also introduced, making a wrong answer much more costly.

Year 2006 the event took some back steps when new rules on airport security were introduced.

Over the years, many rules and regulations were introduced by India.

Some rules were introduced to keep the game fair and to reduce black's advantage on the board.