| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep a close [noun] on the | 28 |
|
| 2 | keep a close [noun sg] on the | 28 |
|
| 3 | keep a close [noun] on the | 27 |
|
| 4 | keep a close eye on the | 16 |
|
| 5 | keep a close eye on the | 16 |
|
| 6 | keep a close watch on the | 10 |
|
| 7 | keeping a close [noun] on the | 10 |
|
| 8 | keep a close watch on the | 10 |
|
