(Labor market rules) can be rigid.Logical formLearned from57 sentences. A system can be rigid.Logical formLearned from55 sentences. A law can be rigid.Logical formLearned from55 sentences. Confines can be rigid.Logical formLearned from55 sentences. A training can be rigid.Logical formLearned from54 sentences. A shaft can be rigid.Logical formLearned from54 sentences. A social hierarchy can be rigid.Logical formLearned from54 sentences. Constraints can be rigid.Logical formLearned from53 sentences. A fork can be rigid.Logical formLearned from53 sentences. Principles can be rigid.Logical formLearned from52 sentences. A shell can be rigid.Logical formLearned from52 sentences. Expectations can be rigid.Logical formLearned from52 sentences. Pavements can be rigid.Logical formLearned from52 sentences. Beliefs can be rigid.Logical formLearned from52 sentences. A wall can be rigid.Logical formLearned from51 sentences.