(Vacancy rates) may remain at levels.Logical formLearned from2 sentences. (Vacancy rates) can be stable.Logical formLearned from2 sentences. Districts may report (vacancy rates).Logical formLearned from2 sentences. Vacancies may rise in a US-city.Logical formLearned from2 sentences. Vacancies may be excluded.Logical formLearned from2 sentences. A vacancy can be in an office of a vice-president.Logical formLearned from2 sentences. Postings of vacancies can be subject to increasing returns.Logical formLearned from2 sentences. A (selection process) can be for filling vacancies.Logical formLearned from2 sentences. A vacancy can be on an advisory-board.Logical formLearned from2 sentences. Some vacancies may be filled in accordance.Logical formLearned from2 sentences. A vacancy can be in a grade.Logical formLearned from2 sentences. A case may pertain-to a vacancy.Logical formLearned from2 sentences. Vacancy may be created.Logical formLearned from2 sentences. Respect can be to a vacancy.Logical formLearned from2 sentences. A vacancy can be appointive.Logical formLearned from2 sentences.