| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] in [art] [noun sg] | 4905 |
|
| 2 | must be [vb pp] in [art] | 344 |
|
| 3 | must be [vb pp] in [noun sg] | 258 |
|
| 4 | must be [vb pp] [art] [noun sg] | 71 |
|
| 5 | must be in [art] [noun sg] | 70 |
|
