An (update policy) can be periodic.Logical formLearned from2 sentences. A ping can be periodic.Logical formLearned from2 sentences. A connectivity can be periodic.Logical formLearned from2 sentences. A repositioning can be periodic.Logical formLearned from2 sentences. A turn-on can be periodic.Logical formLearned from2 sentences. A (gamma ray spectrometer) may measure an abundance of some elements of a periodic table.Logical formLearned from2 sentences. Periodic variations can be in an orbit.Logical formLearned from2 sentences. A (fontanelle pressure assessment) can be periodic.Logical formLearned from2 sentences. A testing/training can be periodic.Logical formLearned from2 sentences. (Compensation surveys) can be periodic.Logical formLearned from2 sentences. A self can be periodic.Logical formLearned from2 sentences. (Book reports) can be periodic.Logical formLearned from2 sentences. Specimen can be periodic.Logical formLearned from2 sentences. A beam can be periodic.Logical formLearned from2 sentences. Skin can be periodic.Logical formLearned from2 sentences.