| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun sg] system | 1295 |
|
| 2 | a [noun sg] system | 1083 |
|
| 3 | an [noun sg] system | 234 |
|
| 4 | a computer system | 66 |
|
| 5 | a operating system | 39 |
|
| 6 | a expert system | 38 |
|
| 7 | a information system | 24 |
|
| 8 | a [noun sg] systems | 22 |
|
| 9 | a cad system | 17 |
|
| 10 | a quota system | 14 |
|
| 11 | a security system | 14 |
|
| 12 | a compliance system | 14 |
|
| 13 | a alarm system | 12 |
|
| 14 | a education system | 12 |
|
| 15 | a hi-fi system | 12 |
|
| 16 | a control system | 11 |
|
| 17 | a tax system | 11 |
|
| 18 | a unix system | 10 |
|
| 19 | a market system | 10 |
|
| 20 | a classification system | 10 |
|
| 21 | a shift system | 9 |
|
| 22 | a transport system | 9 |
|
| 23 | a value system | 9 |
|
| 24 | a sprinkler system | 9 |
|
| 25 | a production system | 9 |
|
| 26 | a prohibition system | 9 |
|
| 27 | a communication system | 9 |
|
| 28 | a accounting system | 9 |
|
| 29 | a recognition system | 8 |
|
| 30 | a rota system | 8 |
|
