| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [to-vb] at | 4833 |
|
| 2 | require [to-vb] [prep] | 464 |
|
| 3 | require [to-vb] [prep] | 464 |
|
| 4 | require [verb] at | 39 |
|
| 5 | require [to-vb] at | 33 |
|
