A nation can be rugged.Logical formLearned from41 sentences. A frame can be rugged.Logical formLearned from41 sentences. An enclosure can be rugged.Logical formLearned from40 sentences. A housing can be rugged.Logical formLearned from40 sentences. A canyon can be rugged.Logical formLearned from40 sentences. A ground can be rugged.Logical formLearned from39 sentences. A player can be rugged.Logical formLearned from39 sentences. A state can be rugged.Logical formLearned from39 sentences. A course can be rugged.Logical formLearned from39 sentences. Parts can be rugged.Logical formLearned from38 sentences. A center can be rugged.Logical formLearned from38 sentences. A hill can be rugged.Logical formLearned from37 sentences. Terrains can be rugged.Logical formLearned from36 sentences. An area can be rugged.Logical formLearned from35 sentences. A geography can be rugged.Logical formLearned from35 sentences.