| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to a [noun] [pron] | 1671 |
|
| 2 | a [noun] system [pron] | 115 |
|
| 3 | to a [noun] system | 46 |
|
| 4 | to a system [pron] | 5 |
|
