1.   But researchers found that almost any period between two months and a year proved equally profitable over the long term.

2.   But some analysts and fund managers say that investments in coal will be profitable over the long term.

3.   Contacts with foreigners could be especially profitable over the next few days.

4.   Jack Cross, administrator for all three funds, said real estate investments are carefully secured and have proved extremely profitable over the years.

5.   The only catch is, the Giants would have to stay profitable over that time period.

6.   Though profitable over the past couple of years during ebullient economic times, they struggle year in and year out to make a decent profit.

7.   All of the companies said their Jamaican operations have been profitable over the last two years.

8.   Despite the problem over the yen leases, BA said Japanese leases would prove profitable over the long-term.