Systems may operate in a manner.Logical formLearned from9 sentences. A British-council may operate.Logical formLearned from9 sentences. Firms may operate in markets.Logical formLearned from9 sentences. Activities may operate.Logical formLearned from9 sentences. Organisations may operate.Logical formLearned from9 sentences. A code may operate.Logical formLearned from9 sentences. (Shuttle buses) may operate.Logical formLearned from9 sentences. Persons may operate by consensus.Logical formLearned from9 sentences. A female may operate a site.Logical formLearned from9 sentences. A tribunal may operate.Logical formLearned from9 sentences. Enemies may operate.Logical formLearned from9 sentences. Criminals may operate with impunity.Logical formLearned from9 sentences. A person may operate on a basis.Logical formLearned from9 sentences. Persons may operate on a principle.Logical formLearned from9 sentences. A command may operate on a buffer.Logical formLearned from9 sentences.