| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] is for [verb] | 53 |
|
| 2 | [noun] is useful for | 48 |
|
| 3 | is useful for [verb] | 39 |
|
| 4 | [noun] useful for [verb] | 21 |
|
| 5 | [noun] is useful [verb] | 10 |
|
