| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | useful [prep] [v-ing] the | 110 |
|
| 2 | useful [prep] [verb] the | 110 |
|
| 3 | [adj] [prep] assessing the | 42 |
|
| 4 | useful [prep] assessing [art] | 7 |
|
| 5 | useful [prep] assess the | 7 |
|
