| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be required for | 72 |
|
| 2 | would be require for | 23 |
|
| 3 | will be require for | 23 |
|
| 4 | may be require for | 19 |
|
| 5 | might be require for | 5 |
|
