A number of other variations are possible, although far less common.

There are a number of variations on the basic design.

There are a number of popular variations that may be agreed to.

It is difficult to understand, and there are a number of variations.

There are also a number of variations on each approach.

It has a number of variations in its rules around the world.

As a result, there are a number of cultural variations among states in the region.

A number of variations can be seen among individual dancers.

In practice, there was a wide number of variations to this common design.

The total number of variations is small, often just one or two for each theme.