A (police investigation) can be prolonged.Logical formLearned from9 sentences. A (real-estate slump) can be prolonged.Logical formLearned from9 sentences. A collapse can be prolonged.Logical formLearned from9 sentences. (Exercise activities) can be prolonged.Logical formLearned from9 sentences. Prices can be prolonged.Logical formLearned from9 sentences. An insecurity can be prolonged.Logical formLearned from9 sentences. Headaches can be prolonged.Logical formLearned from9 sentences. A (liquidity crisis) can be prolonged.Logical formLearned from9 sentences. A breakdown can be prolonged.Logical formLearned from9 sentences. A convalescence can be prolonged.Logical formLearned from9 sentences. A cessation can be prolonged.Logical formLearned from9 sentences. A rift can be prolonged.Logical formLearned from8 sentences. A limbo can be prolonged.Logical formLearned from8 sentences. An obstruction can be prolonged.Logical formLearned from8 sentences. A strife can be prolonged.Logical formLearned from8 sentences.