| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must have been [adv] | 293 |
|
| 2 | [pron] have been [adv] [det] | 286 |
|
| 3 | [pron] must have been [det] | 79 |
|
| 4 | must have been [adv] [det] | 12 |
|
| 5 | [pron] must have [adv] [det] | 5 |
|
