| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [adv] useful for [adj] [noun] | 47 |
|
| 2 | [be] [adv] [adj] for [adj] purpose | 37 |
|
| 3 | [be] [adv] useful [prep] [adj] purpose | 6 |
|
| 4 | [be] [adv] useful [prep] [adj] purpose | 6 |
|
| 5 | [be] [adv] useful for [adj] purpose | 6 |
|
