Indoors can be hard.Logical formLearned from55 sentences. A hard work may go to waste.Logical formLearned from55 sentences. An environment can be hard.Logical formLearned from54 sentences. A mineral can be hard.Logical formLearned from54 sentences. A hard drive can be dead.Logical formLearned from54 sentences. A person may know hard.Logical formLearned from54 sentences. A forehand can be hard.Logical formLearned from54 sentences. Beavers can be hard.Logical formLearned from54 sentences. Acts can be hard.Logical formLearned from54 sentences. A post can be hard.Logical formLearned from54 sentences. A male may run hard.Logical formLearned from54 sentences. A way can be hard.Logical formLearned from54 sentences. A track can be hard.Logical formLearned from54 sentences. A puzzle can be hard.Logical formLearned from54 sentences. A (golf course) can be hard.Logical formLearned from54 sentences.