| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may be [verb] for [art] | 125 |
|
| 2 | may be [vb pp] for [art] | 106 |
|
| 3 | may be required [prep] [art] | 34 |
|
| 4 | may be required [prep] [art] | 34 |
|
| 5 | [vb mod] be required for [art] | 23 |
|
| 6 | [modal v] be required for [art] | 23 |
|
| 7 | may be required for [art] | 6 |
|
| 8 | may be require for [art] | 6 |
|
| 9 | may be required for [art] | 6 |
|
| 10 | may be required for [art] | 6 |
|
| 11 | may [be] required for [art] | 6 |
|
| 12 | may [be] required for [art] | 6 |
|
