| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun] [vb mod] [verb] | 7700 |
|
| 2 | [noun] system [vb mod] [verb] | 263 |
|
| 3 | a [noun] system [verb] | 206 |
|
| 4 | a [noun] system [vb mod] | 61 |
|
| 5 | a system [vb mod] [verb] | 33 |
|
