A (forest area) can be rugged.Logical formLearned from11 sentences. Computers can be rugged.Logical formLearned from11 sentences. Vistas can be rugged.Logical formLearned from11 sentences. A (north shore) can be rugged.Logical formLearned from11 sentences. A challenge can be rugged.Logical formLearned from11 sentences. A (tribal area) can be rugged.Logical formLearned from11 sentences. A (border belt) can be rugged.Logical formLearned from11 sentences. An enclave can be rugged.Logical formLearned from11 sentences. Cars can be rugged.Logical formLearned from11 sentences. Tracks can be rugged.Logical formLearned from11 sentences. A rural area can be rugged.Logical formLearned from11 sentences. A village can be rugged.Logical formLearned from10 sentences. A region can be rugged.Logical formLearned from10 sentences. An attitude can be rugged.Logical formLearned from10 sentences. A ride can be rugged.Logical formLearned from10 sentences.