A retreat can be steep.Logical formLearned from12 sentences. A hole can be steep.Logical formLearned from12 sentences. A drainage can be steep.Logical formLearned from12 sentences. A (death toll) can be steep.Logical formLearned from12 sentences. A target can be steep.Logical formLearned from12 sentences. A home can be steep.Logical formLearned from12 sentences. A pile can be steep.Logical formLearned from12 sentences. A (mountain face) can be steep.Logical formLearned from12 sentences. (Mountain valleys) can be steep.Logical formLearned from12 sentences. A shaft can be steep.Logical formLearned from12 sentences. A (fuel price hike) can be steep.Logical formLearned from11 sentences. (Rock cliffs) can be steep.Logical formLearned from11 sentences. A rocky mountain can be steep.Logical formLearned from11 sentences. A (hip roof) can be steep.Logical formLearned from11 sentences. Cliffs can be steep.Logical formLearned from11 sentences.