| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | especially when [vb pp] | 90 |
|
| 2 | especially when [v-ing] | 68 |
|
| 3 | especially when use | 11 |
|
| 4 | especially when work | 9 |
|
| 5 | especially when working | 9 |
|
| 6 | especially when compare | 8 |
|
| 7 | especially when compared | 8 |
|
| 8 | especially when deal | 7 |
|
| 9 | especially when dealing | 7 |
|
| 10 | especially when used | 6 |
|
| 11 | especially when apply | 5 |
|
| 12 | especially when applied | 5 |
|
| 13 | especially when using | 5 |
|
