| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [verb] an [noun] [prep] | 1449 |
|
| 2 | [vb mod] keep [art] [noun] [prep] | 210 |
|
| 3 | [vb mod] keep [art] [noun] [prep] | 210 |
|
| 4 | [vb mod] keep a [noun] [prep] | 126 |
|
| 5 | [modal v] keep an [noun] [prep] | 76 |
|
