| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] for [verb] [conj] | 332 |
|
| 2 | [adj] for [verb] [conj] | 303 |
|
| 3 | useful [prep] [verb] [conj] | 24 |
|
| 4 | useful [prep] [verb] [conj] | 24 |
|
| 5 | useful for [verb] [conj] | 16 |
|
| 6 | useful for [verb] [conj] | 16 |
|
