A breakup can be tough.Logical formLearned from19 sentences. A war can be tough.Logical formLearned from19 sentences. A street can be tough.Logical formLearned from19 sentences. A stadium can be tough.Logical formLearned from19 sentences. (Border restrictions) can be tough.Logical formLearned from19 sentences. An assault can be tough.Logical formLearned from19 sentences. (Mountain passes) can be tough.Logical formLearned from19 sentences. A person may match tough.Logical formLearned from19 sentences. Bastards can be tough.Logical formLearned from19 sentences. (Budget controls) can be tough.Logical formLearned from19 sentences. (Spending limits) can be tough.Logical formLearned from19 sentences. A declaration can be tough.Logical formLearned from19 sentences. An operation can be tough.Logical formLearned from19 sentences. A tone can be tough.Logical formLearned from19 sentences. Resistance can be tough.Logical formLearned from19 sentences.