| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [v-ing] a | 9802 |
|
| 2 | [noun] when a | 916 |
|
| 3 | [noun] [v-ing] when | 139 |
|
| 4 | [v-ing] when a | 33 |
|
