| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep a [adj] [noun sg] on | 37 |
|
| 2 | keep a [adj] [noun sg] on | 32 |
|
| 3 | keep a [adj] eye on | 23 |
|
| 4 | keep a close [noun sg] on | 20 |
|
| 5 | keep a close [noun sg] on | 19 |
|
| 6 | keep a [adj -er] [noun sg] on | 5 |
|
| 7 | keep a [adj] watch on | 5 |
|
