| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have been [verb] [prep] | 318 |
|
| 2 | have been [verb] out [prep] | 78 |
|
| 3 | must have [verb] out [prep] | 21 |
|
| 4 | must have been [verb] out | 14 |
|
| 5 | must have been out [prep] | 9 |
|
