Cluster headaches occur in cycles: sufferers can experience several headaches a day for weeks or even months on end.

VOA: standard.2009.12.17

Federal officials say stopping the oil flow could take weeks or even months.

VOA: standard.2010.05.02

He followed this hit a few months later with "I Got You (I Feel Good)", an even bigger hit.

VOA: special.2010.05.16

If they become infected, especially after the first three months of pregnancy, they can get very sick or even die.

VOA: special.2009.08.05

If they become infected,especially after the first three months of pregnancy, they can get very sick or even die.

VOA: special.2009.08.18

However,information gathered for the first three months of this year suggest two thousand nine will be even worse.

VOA: special.2009.04.25

They do all this work year-round, even during the cold and snowy winter months in Massachusetts.

VOA: special.2009.12.04

In the early months of the war, Jefferson Davis, the Confederate president, did not even have guns enough for the men in his army.

VOA: special.2009.08.27

Unemployment remains high even after six months of job growth.

VOA: special.2010.07.09

And,the upward unemployment trajectory is expected to continue in coming months, even if the overall economy begins to recover.

VOA: standard.2009.06.07

President Obama says the Haitian earthquake relief effort will not be measured in days or weeks, but in months and even years.

VOA: standard.2010.01.16

Symptoms can include flashbacks, nightmares and memory problems, and can last for months or even years.

VOA: standard.2010.07.01

Economists say unemployment will likely continue to rise for several months even after a recovery begins.

VOA: standard.2009.08.02

(Speech) The Prime Minister said the settlement freeze is limited and building in the West Bank will resume after 10 months, even if peace talks resume.

VOA: standard.2009.12.07

"Of course,the residents of southern Israel who were living in bomb shelters for months,and even years, have a right to live also in safety and dignity,".

VOA: standard.2009.09.09

Others last for months or even years. There is no clear way of predicting at the present time how long this activity might go on for."

VOA: standard.2010.04.16

Colville calls this is an almost unimaginable situation for children and other civilians to have to live through for even one day, let alone months on end.

VOA: standard.2009.10.25

"We're probably,it looks now, like we'll continue to bump along maybe even have some bad months and unemployment is not going to recover as it has in some past recessions."

VOA: standard.2010.01.15

"As I've said from the day I took office, it's going to take months, even years, to dig our way out - and it's going to require an all-hands-on-deck effort."

VOA: standard.2010.07.03

But along the way organizers constantly faced those who doubted South Africa's ability to organize the tournament, complete the stadiums even during the team draw in Cape Town six months ago.

VOA: standard.2010.06.07

U.S.officials worry that, even if the virus' spread is eventually contained, it could re-emerge months from now during the northern hemisphere's winter flu season, when more than 30,000 Americans die each year from common influenza.

VOA: standard.2009.05.03

U.S.officials acknowledge that, even if the situation in Afghanistan begins to turn during the next 12 months, the U.S.withdrawal will likely be very gradual, and some number of international troops will be needed in Afghanistan for many years to come.

VOA: standard.2010.07.22