An outsole can be rugged.Logical formLearned from9 sentences. A (neoprene construction) can be rugged.Logical formLearned from9 sentences. An earth can be rugged.Logical formLearned from9 sentences. Precipices can be rugged.Logical formLearned from9 sentences. A man can be rugged.Logical formLearned from9 sentences. A stone can be rugged.Logical formLearned from9 sentences. A time can be rugged.Logical formLearned from9 sentences. Steel can be rugged.Logical formLearned from9 sentences. Refractors can be rugged.Logical formLearned from9 sentences. Settings can be rugged.Logical formLearned from9 sentences. Frames can be rugged.Logical formLearned from9 sentences. Units can be rugged.Logical formLearned from9 sentences. A (wilderness area) can be rugged.Logical formLearned from9 sentences. A victory can be rugged.Logical formLearned from9 sentences. A reality can be rugged.Logical formLearned from9 sentences.