| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [verb] to [be] | 849 |
|
| 2 | [vb mod] require to [be] | 35 |
|
| 3 | [modal v] require to [be] | 35 |
|
| 4 | may require to [be] | 6 |
|
| 5 | may require to [be] | 6 |
|
| 6 | may require [prep] [be] | 6 |
|
| 7 | may require [prep] [be] | 6 |
|
