period of seven days period of seven years period of severe period of significant period of silence period of six months period of six weeks period of six years period of sleep period of stability period of stagnation period of stay period of storage period of strong period of study period of success period of support period of suspension period of sustained period of ten years period of the contract period of the first period of the great period of the judges period of the previous year period of the project period of the second period of the study period of the war period of the year period of three days period of three months period of three weeks period of three years period of time period of time i period of time may period of time we period of time when period of time you period of training period of transformation period of transition period of treatment period of turmoil period of twelve months period of twenty years period of two days period of two months period of two weeks period of two years period of uncertainty period of unemployment period of unprecedented period of up period of use period of validity period of waiting period of war period of work period of world period of years period often period one period only period onwards period pain period period period piece period pieces period preceding period price period prior period ranges period referred period remain period remains period report period represents period required period right period running period runs period saw period see period selected period set period shall begin period should period show period shown period shows period so period spanning period specified period spent period start period started period starting