| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have been [art] [adj] | 291 |
|
| 2 | must have been [art] [adj] | 237 |
|
| 3 | [modal v] have been [art] good | 34 |
|
| 4 | must have been [art] good | 10 |
|
| 5 | must [verb] been [art] good | 7 |
|
| 6 | must have be [art] good | 7 |
|
| 7 | must have [been] [art] good | 7 |
|
| 8 | must have [be] [art] good | 7 |
|
| 9 | must have been [art] good | 7 |
|
