No | Pattern | Freq | Relations |
---|---|---|---|
1 | an operating system | 39 |
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2 | an expert system | 37 |
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3 | an information system | 21 |
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4 | an education system | 12 |
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5 | an alarm system | 12 |
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6 | an accounting system | 9 |
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7 | an idea-handling system | 5 |
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