A (street map) can be faulty.Logical formLearned from2 sentences. Grenades can be faulty.Logical formLearned from2 sentences. A (software design) can be faulty.Logical formLearned from2 sentences. A (listening device) can be faulty.Logical formLearned from2 sentences. A (pc clock) can be faulty.Logical formLearned from2 sentences. A (voice box) can be faulty.Logical formLearned from2 sentences. (Mail servers) can be faulty.Logical formLearned from2 sentences. A (fire alarm system) can be faulty.Logical formLearned from2 sentences. Electrical supplies can be faulty.Logical formLearned from2 sentences. Shields can be faulty.Logical formLearned from2 sentences. Carburetors can be faulty.Logical formLearned from2 sentences. An irrigation can be faulty.Logical formLearned from2 sentences. A (gasoline pump) can be faulty.Logical formLearned from2 sentences. (Circuit breakers) can be faulty.Logical formLearned from2 sentences. (Nerve signals) can be faulty.Logical formLearned from2 sentences.