| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adj] for [adj] [noun] | 3247 |
|
| 2 | be useful [prep] [adj] [noun] | 127 |
|
| 3 | be useful [prep] [adj] [noun] | 127 |
|
| 4 | [be] useful for [adj] [noun] | 56 |
|
| 5 | be useful for [adj] [noun] | 56 |
|
