| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [adv] be [vb pp] [prep] | 633 |
|
| 2 | [coord] must be [vb pp] [prep] | 157 |
|
| 3 | [coord] [adv] be [vb pp] [prep] | 141 |
|
| 4 | [coord] must [adv] be [vb pp] | 68 |
|
| 5 | [coord] must [adv] be [prep] | 6 |
|
