| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [vb pp] on [adj] | 23 |
|
| 2 | must be [vb pp] on [det] | 22 |
|
| 3 | must be based on [adj] | 13 |
|
| 4 | must be [vb pp] on all | 11 |
|
| 5 | must be [vb pp] on all | 11 |
|
| 6 | must be served on [adj] | 8 |
|
