A situation can be hard.Logical formLearned from30 sentences. (Security issues) can be hard.Logical formLearned from30 sentences. An opponent can be hard.Logical formLearned from30 sentences. A lock can be hard.Logical formLearned from30 sentences. A backhand can be hard.Logical formLearned from29 sentences. Support can be for a hard line.Logical formLearned from29 sentences. A boundary can be hard.Logical formLearned from29 sentences. A lifestyle can be hard.Logical formLearned from29 sentences. A peak can be hard.Logical formLearned from29 sentences. Blocks can be hard.Logical formLearned from29 sentences. A hit can be hard.Logical formLearned from29 sentences. A rudder can be hard.Logical formLearned from29 sentences. Data can be hard.Logical formLearned from29 sentences. A person may see a hard evidence.Logical formLearned from29 sentences. A hard drive can be faulty.Logical formLearned from29 sentences.