| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [adv] be [adj] [conj] | 271 |
|
| 2 | [modal v] [adv] be necessary [conj] | 31 |
|
| 3 | [vb mod] [adv] be necessary [conj] | 31 |
|
| 4 | may [adv] [be] necessary [conj] | 10 |
|
| 5 | may [adv] be necessary [conj] | 10 |
|
