| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may be [verb] to | 947 |
|
| 2 | may be [vb pp] to | 900 |
|
| 3 | may be required [prep] | 74 |
|
| 4 | [modal v] be required to | 32 |
|
| 5 | [vb mod] be required to | 32 |
|
| 6 | may be require to | 5 |
|
| 7 | may be required to | 5 |
|
| 8 | may [be] required to | 5 |
|
