A (drug delivery system) can be sustained.Logical formLearned from14 sentences. A happiness can be sustained.Logical formLearned from14 sentences. (Clout spirits) can be sustained.Logical formLearned from14 sentences. A duration can be sustained.Logical formLearned from14 sentences. Conversations can be sustained.Logical formLearned from14 sentences. A (muscle contraction) can be sustained.Logical formLearned from14 sentences. Harmonies can be sustained.Logical formLearned from14 sentences. A theme can be sustained.Logical formLearned from14 sentences. A (casing pressure) can be sustained.Logical formLearned from14 sentences. A suspense can be sustained.Logical formLearned from14 sentences. A usage can be sustained.Logical formLearned from14 sentences. A critical analysis can be sustained.Logical formLearned from14 sentences. An input can be sustained.Logical formLearned from14 sentences. A violation can be sustained.Logical formLearned from14 sentences. A (power outage) can be sustained.Logical formLearned from14 sentences.