| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [vb pp] some [adj] | 24 |
|
| 2 | must have [vb pp] some [adj] | 24 |
|
| 3 | must have [vb pp] some [adj] | 24 |
|
| 4 | must have [vb pp] some [adj] | 23 |
|
| 5 | must have had some [adj] | 6 |
|
