A (coupling system) can be rigid.Logical formLearned from3 sentences. A weight can be rigid.Logical formLearned from3 sentences. A reinforcement can be rigid.Logical formLearned from3 sentences. (Belt actuators) can be rigid.Logical formLearned from3 sentences. A (belt actuator) can be rigid.Logical formLearned from3 sentences. A rigid body may undergo a movement.Logical formLearned from3 sentences. (Wing sails) can be rigid.Logical formLearned from3 sentences. A pyramid can be rigid.Logical formLearned from3 sentences. A (steel pipe) can be rigid.Logical formLearned from3 sentences. Sepals can be rigid.Logical formLearned from3 sentences. Skulls can be rigid.Logical formLearned from3 sentences. An exocuticle can be rigid.Logical formLearned from3 sentences. A yoke can be rigid.Logical formLearned from3 sentences. An analogue can be rigid.Logical formLearned from3 sentences. Rings can be rigid.Logical formLearned from3 sentences.