A structure can be rugged.Logical formLearned from12 sentences. A north coast can be rugged.Logical formLearned from12 sentences. Masses can be rugged.Logical formLearned from12 sentences. A crag can be rugged.Logical formLearned from12 sentences. A field can be rugged.Logical formLearned from12 sentences. A pc can be rugged.Logical formLearned from12 sentences. Solutions can be rugged.Logical formLearned from12 sentences. A husband can be rugged.Logical formLearned from12 sentences. A (form factor) can be rugged.Logical formLearned from12 sentences. (Wall containers) can be rugged.Logical formLearned from12 sentences. A (carbon fiber alloy body) can be rugged.Logical formLearned from12 sentences. Mountainsides can be rugged.Logical formLearned from12 sentences. A trek can be rugged.Logical formLearned from12 sentences. Pioneers can be rugged.Logical formLearned from12 sentences. Streets can be rugged.Logical formLearned from12 sentences.