The exercise can last from two months to a year.

The treatment, however, costs $1,000 a day, and can last from four to six months.

However the regression only lasted from 2 to 18 months.

Each species' season is different and lasts from two to eight months.

This period may last from six months to a year.

This period lasts from 3 to 5 months during the year, and all growth stops.

A mentoring program can last from three months to a year or more.

Depending on the type, the results can last from 6 to 18 months.

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

Restriction of freedom can last from 1 to 12 months.