Combinations can be hard.Logical formLearned from22 sentences. Hard courts can be in a world-city.Logical formLearned from22 sentences. A soul can be hard.Logical formLearned from22 sentences. Loans can be hard.Logical formLearned from22 sentences. A (disc c) can be hard.Logical formLearned from22 sentences. Music can be hard.Logical formLearned from22 sentences. Data can be from hard drives.Logical formLearned from22 sentences. A hard surface can be smooth.Logical formLearned from22 sentences. Hard drives can be cheap.Logical formLearned from22 sentences. Nodules can be hard.Logical formLearned from22 sentences. A hat can be hard.Logical formLearned from22 sentences. A hard work can be on a project.Logical formLearned from22 sentences. Studies can be hard.Logical formLearned from22 sentences. (Course work) may be related to hard sciences.Logical formLearned from22 sentences. A goal can be hard.Logical formLearned from22 sentences.