There are a number of variants on the same theme.

In addition, the M1931 had a number of experimental variants.

The launch truck is available in a number of variants.

The island's name has been recorded in a number of variants.

It was produced in a number of variants during the war.

A number of variants were proposed but only the prototype was built.

A number of other variants were proposed that never entered production.

In between are any number of variants on these themes.

There are a number of variants, including two different stories.

No type has ever gone into production, although a number of experimental variants have been flown.