An allegiance can be rigid.Logical formLearned from3 sentences. A preconception can be rigid.Logical formLearned from3 sentences. A (class stratification) can be rigid.Logical formLearned from3 sentences. A game can be rigid.Logical formLearned from3 sentences. Weapons can be rigid.Logical formLearned from3 sentences. A manifold can be rigid.Logical formLearned from3 sentences. A (foam backing) can be rigid.Logical formLearned from3 sentences. A programme can be rigid.Logical formLearned from3 sentences. Rigid airships may undergo construction.Logical formLearned from3 sentences. A director can be rigid.Logical formLearned from3 sentences. A gate can be rigid.Logical formLearned from3 sentences. Doors can be rigid.Logical formLearned from3 sentences. A precedent can be rigid.Logical formLearned from3 sentences. Bronchoscopes can be rigid.Logical formLearned from3 sentences. (Metal tubes) can be rigid.Logical formLearned from3 sentences.