Some periods can be constituted-of-or-filled-with active service.Logical formLearned from4 sentences. Grandparents can be active.Logical formLearned from4 sentences. (Service persons) can be on active duty.Logical formLearned from4 sentences. A regiment can be active in a century.Logical formLearned from4 sentences. A trio can be active.Logical formLearned from4 sentences. Some daughters can be active.Logical formLearned from4 sentences. A wing may remain active.Logical formLearned from4 sentences. A male may enter on active duty.Logical formLearned from4 sentences. Active duty can be in a US-city.Logical formLearned from4 sentences. A doctor can be an active member of some professional societies.Logical formLearned from4 sentences. Shouters can be active.Logical formLearned from4 sentences. A journalist can be active in a country.Logical formLearned from4 sentences. A person may be call_uped for active duty.Logical formLearned from4 sentences. An active member may pertain-to a (historical society).Logical formLearned from4 sentences. Players can be on an active roster of a team.Logical formLearned from4 sentences.