A symmetry can be rigid.Logical formLearned from14 sentences. A category can be rigid.Logical formLearned from14 sentences. A mask can be rigid.Logical formLearned from14 sentences. Caps can be rigid.Logical formLearned from14 sentences. A screen can be rigid.Logical formLearned from14 sentences. Concepts can be rigid.Logical formLearned from14 sentences. A devotion can be rigid.Logical formLearned from14 sentences. A demarcation can be rigid.Logical formLearned from14 sentences. A rhetoric can be rigid.Logical formLearned from14 sentences. A screening can be rigid.Logical formLearned from14 sentences. Sides can be rigid.Logical formLearned from13 sentences. Front axles can be rigid.Logical formLearned from13 sentences. A section can be rigid.Logical formLearned from13 sentences. An assembly can be rigid.Logical formLearned from13 sentences. Endoscopes can be rigid.Logical formLearned from13 sentences.