A tube can be rigid.Logical formLearned from50 sentences. A (foam insulation) can be rigid.Logical formLearned from50 sentences. Bars can be rigid.Logical formLearned from50 sentences. Practices can be rigid.Logical formLearned from50 sentences. A structure can be rigid.Logical formLearned from49 sentences. A barrier can be rigid.Logical formLearned from49 sentences. A chassis can be rigid.Logical formLearned from48 sentences. Lenses can be rigid.Logical formLearned from48 sentences. Attitudes can be rigid.Logical formLearned from48 sentences. A defense can be rigid.Logical formLearned from48 sentences. A curfew can be rigid.Logical formLearned from48 sentences. Ways can be rigid.Logical formLearned from48 sentences. An axle can be rigid.Logical formLearned from47 sentences. Designators can be rigid.Logical formLearned from47 sentences. A (barrier test) can be rigid.Logical formLearned from47 sentences.