| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [noun] for | 51448 |
|
| 2 | [noun] [noun sg] for | 33782 |
|
| 3 | [noun] system [prep] | 2405 |
|
| 4 | [noun] system for | 699 |
|
