| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have been [prep] [det] | 26 |
|
| 2 | must [vb infin] been [prep] [det] | 26 |
|
| 3 | must have been [prep] [det] | 26 |
|
| 4 | must [verb] been [prep] this | 8 |
|
| 5 | must [verb] been [prep] that | 8 |
|
| 6 | must [verb] been [prep] some | 6 |
|
| 7 | must [verb] been like [det] | 5 |
|
| 8 | must [verb] been at [det] | 5 |
|
| 9 | must [verb] been in [det] | 5 |
|
