| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and [noun] [noun] for | 1930 |
|
| 2 | and [noun] [noun] system | 277 |
|
| 3 | [noun] [noun] system for | 197 |
|
| 4 | and [noun] system for | 38 |
|
