A bureaucracy can be rigid.Logical formLearned from4 sentences. (Class barriers) can be rigid.Logical formLearned from4 sentences. A male may look rigid.Logical formLearned from4 sentences. A ride can be rigid.Logical formLearned from4 sentences. A rig can be rigid.Logical formLearned from4 sentences. Members can be rigid.Logical formLearned from4 sentences. A deal can be rigid.Logical formLearned from4 sentences. Knees can be rigid.Logical formLearned from4 sentences. A taskmaster can be rigid.Logical formLearned from4 sentences. Companies can be rigid.Logical formLearned from4 sentences. A social conservatism can be rigid.Logical formLearned from4 sentences. A cone can be rigid.Logical formLearned from4 sentences. A coach can be rigid.Logical formLearned from4 sentences. (Aluminum ducts) can be rigid.Logical formLearned from4 sentences. (Course requirements) can be rigid.Logical formLearned from4 sentences.