| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] it be [prep] | 1290 |
|
| 2 | [adv] it must be | 193 |
|
| 3 | it must be [prep] | 189 |
|
| 4 | [adv] must be [prep] | 21 |
|
| 5 | [adv] it must [prep] | 11 |
|
