| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [adv] [adj] [noun] | 669 |
|
| 2 | must have [been] [adv] [adj] | 321 |
|
| 3 | must have [been] [adj] [noun] | 120 |
|
| 4 | must have [adv] [adj] [noun] | 11 |
|
