An intensive-care unit can be busy.Logical formLearned from9 sentences. Lists can be busy.Logical formLearned from9 sentences. Researcher can be busy.Logical formLearned from9 sentences. A surface can be busy.Logical formLearned from9 sentences. A party can be busy.Logical formLearned from9 sentences. Callers may get busy signals.Logical formLearned from9 sentences. Some times can be busy.Logical formLearned from9 sentences. Persons can be busy.Logical formLearned from9 sentences. A person may get busy with projects.Logical formLearned from9 sentences. A mix can be busy.Logical formLearned from9 sentences. A young woman can be busy.Logical formLearned from9 sentences. Units can be busy.Logical formLearned from9 sentences. A clerk can be busy.Logical formLearned from9 sentences. A project can be busy.Logical formLearned from9 sentences. An uncle can be busy.Logical formLearned from9 sentences.