A (selection process) can be tough.Logical formLearned from11 sentences. Mandatory-minimum sentences can be tough.Logical formLearned from11 sentences. A hop can be tough.Logical formLearned from11 sentences. A duo can be tough.Logical formLearned from11 sentences. A congressional oversight can be tough.Logical formLearned from11 sentences. (Trading conditions) may remain tough.Logical formLearned from11 sentences. A situation may get tough.Logical formLearned from11 sentences. An indictment can be tough.Logical formLearned from11 sentences. A repression can be tough.Logical formLearned from11 sentences. A chicken can be tough.Logical formLearned from11 sentences. A (ball game) can be tough.Logical formLearned from11 sentences. A color can be tough.Logical formLearned from11 sentences. A mien can be tough.Logical formLearned from11 sentences. A person may play tough guy.Logical formLearned from11 sentences. Schools can be tough.Logical formLearned from11 sentences.