A train can be periodic.Logical formLearned from9 sentences. A (membership fee) can be periodic.Logical formLearned from9 sentences. Tenancies can be periodic.Logical formLearned from9 sentences. A trajectory can be periodic.Logical formLearned from9 sentences. Relationships can be periodic.Logical formLearned from9 sentences. A magnetic field can be periodic.Logical formLearned from9 sentences. A boundary can be periodic.Logical formLearned from9 sentences. (Rocket attacks) can be periodic.Logical formLearned from9 sentences. (Power cuts) can be periodic.Logical formLearned from9 sentences. (Satisfaction surveys) can be periodic.Logical formLearned from9 sentences. Escalations can be periodic.Logical formLearned from9 sentences. A financial reporting can be periodic.Logical formLearned from9 sentences. Increments can be periodic.Logical formLearned from9 sentences. Models can be periodic.Logical formLearned from9 sentences. (Program evaluations) can be periodic.Logical formLearned from9 sentences.