A (championship team) can be undefeated.Logical formLearned from21 sentences. Teams can be undefeated.Logical formLearned from20 sentences. A female may remain undefeated.Logical formLearned from20 sentences. A self can be undefeated.Logical formLearned from20 sentences. A wicket can be undefeated.Logical formLearned from20 sentences. A status can be undefeated.Logical formLearned from19 sentences. An army can be undefeated.Logical formLearned from19 sentences. A (football season) can be undefeated.Logical formLearned from19 sentences. Runs can be undefeated.Logical formLearned from18 sentences. A career can be undefeated.Logical formLearned from18 sentences. A US-city may go undefeated.Logical formLearned from18 sentences. A world can be undefeated.Logical formLearned from18 sentences. A country can be undefeated in some games.Logical formLearned from18 sentences. A club can be undefeated.Logical formLearned from17 sentences. A (conference season) can be undefeated.Logical formLearned from16 sentences.