| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] [prep] [det] | 1595 |
|
| 2 | be require [prep] [det] | 162 |
|
| 3 | be [adv] require [prep] | 140 |
|
| 4 | [adv] require [prep] [det] | 25 |
|
