| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] must be [vb pp] | 4161 |
|
| 2 | [noun sg] must be [art] | 421 |
|
| 3 | must be [vb pp] [art] | 160 |
|
| 4 | [noun sg] be [vb pp] [art] | 34 |
|
