period has expired period have period here period immediately period in europe period in history period in japan period in life period in my life period in office period in order period in question period in the history period in time period included period includes period including period increased period increases period indicated period instruments period is approximately period is calculated period is called period is characterized period is coming period is considered period is defined period is determined period is divided period is equal period is extended period is generally period is known period is late period is marked period is necessary period is one period is one year period is provided period is referred period is required period is short period is shorter period is shown period is typically period january period japan period june period just period known period laid period last period last year period lasted period lasting period lasts period leading up period length period longer period marked period marks period may period may be extended period means period mentioned period might period most period must period no period normally period not period not exceeding period not to exceed period now period number period occurred period occurs period of a year period of absence period of activity period of adjustment period of administration period of american period of ancient period of application period of calm period of change period of civil period of conflict period of confusion period of consolidation period of construction period of consultation period of continuous period of convalescence period of coverage period of crisis period of darkness