| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | very [adj] when [verb] [prep] | 23 |
|
| 2 | very [adj] when [verb] [prep] | 23 |
|
| 3 | [adv] useful when [verb] [prep] | 10 |
|
| 4 | [adv] useful when [verb] [prep] | 10 |
|
| 5 | very useful [conj] [verb] [prep] | 5 |
|
| 6 | very useful when [verb] [prep] | 5 |
|
| 7 | very useful when [verb] [prep] | 5 |
|
