| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must be [vb pp] [adj] | 13 |
|
| 2 | it must be made [adj] | 9 |
|
| 3 | it must be make [adj] | 9 |
|
| 4 | it must be [verb] clear | 7 |
|
