| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] have been [v-ing] [prep] | 2747 |
|
| 2 | when [pers pn] have been [v-ing] | 85 |
|
| 3 | when [pers pn] have been [prep] | 72 |
|
