The film was shot over a period of six months.

Let's say the market takes off over a period of weeks or months.

Over a period of months I spent time at three.

However, one has spent £6.4m and the other just 1.2 in the same 3 month period.

It must be let for at least 70 days in the 12 month period.

The election took place over a period of almost two months.

That means often a period of up to three months.

He wrote it over a period of six months in 1994.

It was made in a period of only four months.

Nearly 600 jobs were lost in a period of six months.