A movement can be rigid.Logical formLearned from9 sentences. A cover can be rigid.Logical formLearned from9 sentences. Postures can be rigid.Logical formLearned from9 sentences. An aluminum can be rigid.Logical formLearned from9 sentences. Grids can be rigid.Logical formLearned from9 sentences. An object can be rigid.Logical formLearned from9 sentences. A domain can be rigid.Logical formLearned from9 sentences. A specification can be rigid.Logical formLearned from9 sentences. Couplings can be rigid.Logical formLearned from9 sentences. An administration can be rigid.Logical formLearned from9 sentences. Markets can be rigid.Logical formLearned from9 sentences. A jaw can be rigid.Logical formLearned from9 sentences. An area can be rigid.Logical formLearned from9 sentences. A dirigible balloon can be with a rigid frame.Logical formLearned from9 sentences. Actions can be rigid.Logical formLearned from9 sentences.