The class received a number of modifications during their lives.

The A-350 developed through a period of growth and modifications.

These rules have gone through a lot of modifications over the years.

A number of other modifications were carried out over the years.

There were two other periods of modification and in 1889.

The Association allows quite a high level of modification over the original.

I noted that there had been a number of modifications.

There were also a number of modifications to the school's grounds.

The name stuck, though a couple of further modifications followed.

There is a great variety of modifications to the basic design.