A (class struggle) can be sustained.Logical formLearned from3 sentences. A structure can be sustained.Logical formLearned from3 sentences. A civilization can be sustained.Logical formLearned from3 sentences. Sections can be sustained.Logical formLearned from3 sentences. A compression can be sustained.Logical formLearned from3 sentences. A sustained development may pertain-to a sector.Logical formLearned from3 sentences. An absenteeism can be sustained.Logical formLearned from3 sentences. A fury can be sustained.Logical formLearned from3 sentences. An (enlightenment campaign) can be sustained.Logical formLearned from3 sentences. An engraftment can be sustained.Logical formLearned from3 sentences. Pads can be sustained.Logical formLearned from3 sentences. Single lines can be sustained.Logical formLearned from3 sentences. A notch can be sustained.Logical formLearned from3 sentences. A methodology can be sustained.Logical formLearned from3 sentences. A sponsorship can be sustained.Logical formLearned from3 sentences.