Security may undergo maintenance.Logical formLearned from270 sentences. Maintenance can be inadequate.Logical formLearned from267 sentences. Effort may undergo maintenance.Logical formLearned from260 sentences. Maintenance may pertain-to a male.Logical formLearned from253 sentences. Roads may undergo maintenance.Logical formLearned from251 sentences. Maintenance may be performed.Logical formLearned from244 sentences. Maintenance can be monthly.Logical formLearned from239 sentences. Maintenance can be required.Logical formLearned from237 sentences. A site may undergo maintenance.Logical formLearned from221 sentences. Health may undergo maintenance.Logical formLearned from218 sentences. A lack can be constituted-of-or-filled-with maintenance.Logical formLearned from216 sentences. Maintenance can be improper.Logical formLearned from214 sentences. (World peace) may undergo maintenance.Logical formLearned from206 sentences. A (maintenance program) can be preventive.Logical formLearned from206 sentences. Equipment may undergo maintenance.Logical formLearned from199 sentences.