A (screen protector) can be rigid.Logical formLearned from7 sentences. Persons can be rigid.Logical formLearned from7 sentences. An underlayment can be rigid.Logical formLearned from7 sentences. Lungs can be rigid.Logical formLearned from7 sentences. A (belief system) can be rigid.Logical formLearned from7 sentences. A defence can be rigid.Logical formLearned from7 sentences. A view can be rigid.Logical formLearned from7 sentences. An expectation can be rigid.Logical formLearned from7 sentences. Handles can be rigid.Logical formLearned from7 sentences. A propriety can be rigid.Logical formLearned from7 sentences. A swimming pool can be rigid.Logical formLearned from7 sentences. A (pricing structure) can be rigid.Logical formLearned from7 sentences. A house can be rigid.Logical formLearned from7 sentences. A (time line) can be rigid.Logical formLearned from7 sentences. An inflexibility can be rigid.Logical formLearned from7 sentences.