Maintenance can be periodic.Logical formLearned from330 sentences. Orbits can be periodic.Logical formLearned from328 sentences. Surveys can be periodic.Logical formLearned from321 sentences. An inspection can be periodic.Logical formLearned from320 sentences. Evaluations can be periodic.Logical formLearned from295 sentences. A reporting can be periodic.Logical formLearned from293 sentences. Changes can be periodic.Logical formLearned from282 sentences. A periodic table may pertain-to elements.Logical formLearned from279 sentences. Checks can be periodic.Logical formLearned from269 sentences. Assessments can be periodic.Logical formLearned from257 sentences. A training can be periodic.Logical formLearned from232 sentences. A payment can be periodic.Logical formLearned from232 sentences. Filings can be periodic.Logical formLearned from227 sentences. Bouts can be periodic.Logical formLearned from226 sentences. Audits can be periodic.Logical formLearned from225 sentences.