| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] he [be] [v-ing] [prep] | 1376 |
|
| 2 | when [pron] [be] [v-ing] [prep] | 959 |
|
| 3 | when he [be] [verb] [prep] | 460 |
|
| 4 | when he [be] [v-ing] [prep] | 124 |
|
