Waves can be abstract.Logical formLearned from2 sentences. A silhouette can be abstract.Logical formLearned from2 sentences. Abstract thought may undergo manifestations.Logical formLearned from2 sentences. Some ways can be abstract.Logical formLearned from2 sentences. A champion can be constituted-of-or-filled-with abstract expressionism.Logical formLearned from2 sentences. (Ivory towers) can be abstract.Logical formLearned from2 sentences. A way can be abstract.Logical formLearned from2 sentences. (Zoomorphic forms) can be abstract.Logical formLearned from2 sentences. Cones can be abstract.Logical formLearned from2 sentences. A prospect of combat can be abstract.Logical formLearned from2 sentences. A portrait may show an abstract expressionist.Logical formLearned from2 sentences. Situations can be abstract.Logical formLearned from2 sentences. Talk can be abstract.Logical formLearned from2 sentences. Experience can be abstract.Logical formLearned from2 sentences. A ballad can be abstract.Logical formLearned from2 sentences.