| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] for [adj] [noun] | 10045 |
|
| 2 | useful [prep] [adj] [noun] | 311 |
|
| 3 | useful [prep] [adj] [noun] | 311 |
|
| 4 | useful for [adj] [noun] | 145 |
|
