| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must also be [vb pp] | 299 |
|
| 2 | must be [vb pp] [adj] | 218 |
|
| 3 | must also be [adj] | 110 |
|
| 4 | also be [vb pp] [adj] | 63 |
|
