Fire was one of the most common symbols for desire, sexual and otherwise.

It is a very common symbol in the Wiccan religion.

It is one of the most common symbols in the game.

So a 200-yard game is a more acceptable standard of excellence than 100-yards plus, the former symbol now common.

Below is an example for some of the most common symbols used:

It was in this period that the national flag emerged as a common symbol.

The 1968 games saw two separate German teams which still used the compromise common symbols.

With a single currency, our citizens now have a common symbol of European identity which they use in their daily lives.

The pentagram is the most common symbol of religious identity.

Those are English letters and a very common symbol on highways if you add something to it.