Models may show rigid objects.Logical formLearned from4 sentences. A family can be rigid.Logical formLearned from4 sentences. A formalist can be rigid.Logical formLearned from4 sentences. A regularity can be rigid.Logical formLearned from4 sentences. Mechanics can be constituted-of-or-filled-with rigid bodies.Logical formLearned from4 sentences. A phase can be rigid.Logical formLearned from4 sentences. Figures can be rigid.Logical formLearned from4 sentences. A business can be rigid.Logical formLearned from4 sentences. A march can be rigid.Logical formLearned from4 sentences. Exoskeletons can be rigid.Logical formLearned from4 sentences. Legs can be rigid.Logical formLearned from4 sentences. (Security procedures) can be rigid.Logical formLearned from4 sentences. Sidewalls can be rigid.Logical formLearned from4 sentences. Specifications can be rigid.Logical formLearned from4 sentences. Environmental standards can be rigid.Logical formLearned from4 sentences.