| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] not necessarily be [verb] to | 12 |
|
| 2 | [vb mod] not necessarily be [verb] to | 12 |
|
| 3 | need not necessarily be [verb] to | 5 |
|
| 4 | need not necessarily be [verb] to | 5 |
|
