| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [verb] this [noun] | 58 |
|
| 2 | when [verb] this [noun sg] | 58 |
|
| 3 | when [v-ing] this [noun] | 57 |
|
| 4 | when using this [noun] | 12 |
|
| 5 | when use this [noun] | 12 |
|
