| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] a [noun] for [noun] | 436 |
|
| 2 | when [v-ing] a [noun] [noun] | 94 |
|
| 3 | when [v-ing] a [noun] for | 27 |
|
| 4 | when [v-ing] [noun] for [noun] | 23 |
|
