Cheers can be sustained.Logical formLearned from31 sentences. A hard work can be sustained.Logical formLearned from31 sentences. A hypertension can be sustained.Logical formLearned from31 sentences. Airstrikes can be sustained.Logical formLearned from31 sentences. A control can be sustained.Logical formLearned from30 sentences. An (achievement award) can be sustained.Logical formLearned from30 sentences. A history can be sustained.Logical formLearned from30 sentences. A slide can be sustained.Logical formLearned from30 sentences. A look can be sustained.Logical formLearned from30 sentences. A role can be sustained.Logical formLearned from30 sentences. A bandwidth can be sustained.Logical formLearned from30 sentences. A nuclear (chain reaction) can be sustained.Logical formLearned from30 sentences. A load can be sustained.Logical formLearned from30 sentences. An elevation can be sustained.Logical formLearned from30 sentences. A return can be sustained.Logical formLearned from30 sentences.