An approach can be rigid.Logical formLearned from12 sentences. A faith can be rigid.Logical formLearned from12 sentences. Resistance can be rigid.Logical formLearned from12 sentences. A refusal can be rigid.Logical formLearned from12 sentences. A treatment can be rigid.Logical formLearned from12 sentences. A methodology can be rigid.Logical formLearned from12 sentences. A system can be constituted-of-or-filled-with rigid bodies.Logical formLearned from12 sentences. A beam can be rigid.Logical formLearned from12 sentences. A diaphragm can be rigid.Logical formLearned from12 sentences. An investigation can be rigid.Logical formLearned from12 sentences. Health can be rigid.Logical formLearned from12 sentences. (Government controls) can be rigid.Logical formLearned from12 sentences. A legacy can be rigid.Logical formLearned from12 sentences. A central planning can be rigid.Logical formLearned from12 sentences. A (command economy) can be rigid.Logical formLearned from12 sentences.