Revenue can be unpaid.Logical formLearned from7 sentences. A (telephone bill) can be unpaid.Logical formLearned from7 sentences. A (tax revenue) can be unpaid.Logical formLearned from7 sentences. A (slave labor) can be unpaid.Logical formLearned from7 sentences. A sum can be unpaid.Logical formLearned from7 sentences. A wage can be unpaid.Logical formLearned from6 sentences. (Pension premiums) can be unpaid.Logical formLearned from6 sentences. A reimbursement can be unpaid.Logical formLearned from6 sentences. (Maintenance bills) can be unpaid.Logical formLearned from6 sentences. (Printing bills) can be unpaid.Logical formLearned from6 sentences. An apprenticeship can be unpaid.Logical formLearned from6 sentences. A male may take an unpaid leave.Logical formLearned from6 sentences. Tariffs can be unpaid.Logical formLearned from6 sentences. An informant can be unpaid.Logical formLearned from6 sentences. (Volunteer workers) can be unpaid.Logical formLearned from6 sentences.