| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [adv] [adj] for | 297 |
|
| 2 | must have been [adv] [adj] | 243 |
|
| 3 | must have been [adj] for | 47 |
|
| 4 | must have been [adv] for | 6 |
|
