(Frame structures) can be rigid.Logical formLearned from4 sentences. A platform can be rigid.Logical formLearned from4 sentences. A replica can be rigid.Logical formLearned from4 sentences. An eye can be rigid.Logical formLearned from4 sentences. A capitalism can be rigid.Logical formLearned from4 sentences. A letter can be rigid.Logical formLearned from4 sentences. An airframe can be rigid.Logical formLearned from4 sentences. Bones can be rigid.Logical formLearned from4 sentences. A digit can be rigid.Logical formLearned from4 sentences. Nipples can be rigid.Logical formLearned from4 sentences. An (urethane foam) can be rigid.Logical formLearned from4 sentences. Priorities can be rigid.Logical formLearned from4 sentences. A categorisation can be rigid.Logical formLearned from4 sentences. A cut can be rigid.Logical formLearned from4 sentences. A (divorce law) can be rigid.Logical formLearned from4 sentences.