That agreement is unique but will last only one to two years, depending on the type of security.

Immunity was found to last from one to three years.

The development period lasts 2 to 3 or 4 years.

During this period the metabolic rate is very low and it may last from a few hours to many years.

He said such a ban should last two to four years.

The effects are expected to last one to three years.

This state may last from a few months to more than 10 years.

The course of study lasts anywhere from nine months to two years.

According to the event, the duration of this state may last from just a few months to many years.

Such a program lasts three to four and a half years.