A (tax income) can be sustained.Logical formLearned from4 sentences. A heavy load can be sustained.Logical formLearned from4 sentences. A (child abuse) can be sustained.Logical formLearned from4 sentences. A .. can be sustained.Logical formLearned from4 sentences. (Delivery technologies) can be sustained.Logical formLearned from4 sentences. (Drug delivery systems) can be sustained.Logical formLearned from4 sentences. Incomes can be sustained.Logical formLearned from4 sentences. A (food aid) can be sustained.Logical formLearned from4 sentences. An (energy level) can be sustained.Logical formLearned from4 sentences. A sunshine can be sustained.Logical formLearned from4 sentences. Bombings can be sustained.Logical formLearned from4 sentences. A (campaign tactic) can be sustained.Logical formLearned from4 sentences. A downswing can be sustained.Logical formLearned from4 sentences. An economic advantage can be sustained.Logical formLearned from4 sentences. A deluge can be sustained.Logical formLearned from4 sentences.