| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | especially when [verb] | 158 |
|
| 2 | [adv] when use | 53 |
|
| 3 | especially [conj] use | 16 |
|
| 4 | especially [subord] use | 16 |
|
| 5 | especially when use | 11 |
|
