| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep a [noun] on [adj] [noun] | 9 |
|
| 2 | keep [art] [noun] on [adj] [noun] | 9 |
|
| 3 | keep [art] [noun sg] on [adj] [noun] | 9 |
|
| 4 | keep [art] eye on [adj] [noun] | 7 |
|
| 5 | keep [art] eye on [adj] [noun] | 7 |
|
| 6 | keep an [noun] on [adj] [noun] | 7 |
|
| 7 | keep [art] [noun] on [det] [noun] | 6 |
|
