| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of a [noun] [pron] | 3428 |
|
| 2 | of a [noun] system | 181 |
|
| 3 | a [noun] system [pron] | 115 |
|
| 4 | of a system [pron] | 26 |
|
| 5 | of [noun] system [pron] | 12 |
|
