| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] need to keep [art] [noun] | 9 |
|
| 2 | [modal v] need to keep [art] [noun] | 9 |
|
| 3 | will need to keep [art] [noun] | 6 |
|
| 4 | need to keep [art] [noun] [prep] | 6 |
|
| 5 | need to keep [art] [noun] [prep] | 6 |
|
