| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [that] [pron] have been | 645 |
|
| 2 | [that] [pron] have been [v-ing] | 625 |
|
| 3 | [vb past] [pron] have been [v-ing] | 185 |
|
