| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] uses a | 151 |
|
| 2 | [noun prp] uses a | 52 |
|
| 3 | system uses a | 15 |
|
| 4 | system uses a | 14 |
|
| 5 | [noun pl] uses a | 7 |
|
| 6 | machine uses a | 6 |
|
| 7 | machine uses a | 6 |
|
