| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been [adj] for | 271 |
|
| 2 | [modal v] have been [adj] for | 271 |
|
| 3 | must have been [adj] [prep] | 217 |
|
| 4 | must have been [adj] [prep] | 217 |
|
| 5 | must have [been] [adj] for | 48 |
|
| 6 | must [verb] been [adj] for | 48 |
|
| 7 | must have be [adj] for | 48 |
|
| 8 | must have been [adj] for | 48 |
|
| 9 | must have been [adj] for | 48 |
|
| 10 | must have been [adj] for | 48 |
|
| 11 | must have [be] [adj] for | 48 |
|
| 12 | must [vb infin] been [adj] for | 48 |
|
