A (property boom) can be sustained.Logical formLearned from7 sentences. Phases can be sustained.Logical formLearned from7 sentences. (Summer winds) can be sustained.Logical formLearned from7 sentences. A (reconstruction process) can be sustained.Logical formLearned from7 sentences. (Price increases) can be sustained.Logical formLearned from7 sentences. Signs can be sustained.Logical formLearned from7 sentences. An (opposition campaign) can be sustained.Logical formLearned from7 sentences. Spells can be sustained.Logical formLearned from7 sentences. A weakening can be sustained.Logical formLearned from7 sentences. A build-up can be sustained.Logical formLearned from7 sentences. A (resistance campaign) can be sustained.Logical formLearned from7 sentences. A (bull run) can be sustained.Logical formLearned from7 sentences. A pick can be sustained.Logical formLearned from7 sentences. Floods can be sustained.Logical formLearned from7 sentences. A counter-offensive can be sustained.Logical formLearned from7 sentences.