| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] of a [noun] system [pron] | 7 |
|
| 2 | [noun sg] of a [noun] system [pron] | 6 |
|
| 3 | of a [adj] [noun] system [pron] | 10 |
|
| 4 | of a [adj] [noun] system [pron] | 10 |
|
