| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must have been [adj] | 445 |
|
| 2 | there [vb mod] have been [adj] | 277 |
|
| 3 | there [modal v] have been [adj] | 277 |
|
| 4 | there must have [be] [adj] | 84 |
|
| 5 | there must [verb] been [adj] | 84 |
|
| 6 | there must have be [adj] | 84 |
|
| 7 | there must have [been] [adj] | 84 |
|
| 8 | there must have been [adj] | 84 |
|
