| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be necessary for [det] | 18 |
|
| 2 | [modal v] be necessary for [det] | 18 |
|
| 3 | will be necessary for [det] | 9 |
|
| 4 | will be necessary for [det] | 8 |
|
| 5 | may be necessary for [det] | 5 |
|
| 6 | may be necessary for [det] | 5 |
|
