| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] [v-ing] [prep] | 181 |
|
| 2 | [verb] when [v-ing] [prep] | 178 |
|
| 3 | been [verb] when [v-ing] | 14 |
|
| 4 | been [verb] when [prep] | 6 |
|
