| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] [modal v] have been [prep] this | 17 |
|
| 2 | [pron] [vb mod] have been [prep] this | 17 |
|
| 3 | it [modal v] have been [prep] this | 10 |
|
| 4 | it [modal v] have been [prep] this | 10 |
|
| 5 | [pron] must have been [prep] this | 7 |
|
| 6 | [pron] must have been [prep] this | 7 |
|
