| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been [v-ing] [prep] [noun sg] | 26 |
|
| 2 | [vb mod] have been [v-ing] in [noun sg] | 11 |
|
| 3 | would have been [v-ing] [prep] [noun sg] | 10 |
|
| 4 | must have been [v-ing] [prep] [noun sg] | 5 |
|
