Clusters can be rigid.Logical formLearned from8 sentences. Sigmoidoscopies can be rigid.Logical formLearned from8 sentences. Dictates can be rigid.Logical formLearned from8 sentences. A man can be rigid.Logical formLearned from8 sentences. A political structure can be rigid.Logical formLearned from8 sentences. Bureaucracies can be rigid.Logical formLearned from8 sentences. A (plastic shell) can be rigid.Logical formLearned from8 sentences. A joint can be rigid.Logical formLearned from8 sentences. An exactness can be rigid.Logical formLearned from8 sentences. A proof can be rigid.Logical formLearned from8 sentences. Social mores can be rigid.Logical formLearned from8 sentences. Moralists can be rigid.Logical formLearned from8 sentences. A polyurethane can be rigid.Logical formLearned from8 sentences. A helmet can be rigid.Logical formLearned from8 sentences. Goals can be rigid.Logical formLearned from8 sentences.