Sleep may undergo a regulation.Logical formLearned from52 sentences. Sleep can be calm.Logical formLearned from52 sentences. Patients can be with obstructive (sleep apnea).Logical formLearned from52 sentences. A person may drift into sleep.Logical formLearned from52 sentences. Sleep can be crappy.Logical formLearned from52 sentences. A person may enjoy sleep.Logical formLearned from52 sentences. A male may watch sleep.Logical formLearned from52 sentences. A middle may pertain-to sleep.Logical formLearned from51 sentences. Sleep can be restless.Logical formLearned from51 sentences. Days can be without sleep.Logical formLearned from51 sentences. Sleep may pertain-to some night.Logical formLearned from51 sentences. A person may value sleep.Logical formLearned from50 sentences. Sleep may take a male.Logical formLearned from50 sentences. A person can be in need of sleep.Logical formLearned from50 sentences. Sleep may pertain-to good night.Logical formLearned from50 sentences.