Lines can be sustained.Logical formLearned from10 sentences. A vowel can be sustained.Logical formLearned from10 sentences. An (artillery attack) can be sustained.Logical formLearned from10 sentences. A friendship can be sustained.Logical formLearned from10 sentences. A mediocrity can be sustained.Logical formLearned from10 sentences. A plateau can be sustained.Logical formLearned from10 sentences. An ambiguity can be sustained.Logical formLearned from10 sentences. A (rocket fire) can be sustained.Logical formLearned from10 sentences. A behavioral change can be sustained.Logical formLearned from10 sentences. A (consumer spending) can be sustained.Logical formLearned from10 sentences. A cheer can be sustained.Logical formLearned from10 sentences. A spirit can be sustained.Logical formLearned from10 sentences. A scene can be sustained.Logical formLearned from10 sentences. A lyricism can be sustained.Logical formLearned from10 sentences. A need can be sustained.Logical formLearned from10 sentences.