(Energy bills) can be unpaid.Logical formLearned from13 sentences. Wages can be unpaid.Logical formLearned from13 sentences. Salaries can be unpaid.Logical formLearned from13 sentences. A contribution can be unpaid.Logical formLearned from12 sentences. A training can be unpaid.Logical formLearned from12 sentences. An amount may remain unpaid.Logical formLearned from12 sentences. A (leave status) can be unpaid.Logical formLearned from12 sentences. An unpaid leave can be indefinite.Logical formLearned from12 sentences. Wages may go unpaid.Logical formLearned from12 sentences. Some bills may go unpaid.Logical formLearned from12 sentences. Education can be unpaid.Logical formLearned from12 sentences. Artists can be unpaid.Logical formLearned from12 sentences. A fee can be unpaid.Logical formLearned from12 sentences. Posts can be unpaid.Logical formLearned from12 sentences. An apprentice can be unpaid.Logical formLearned from12 sentences.