| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a close [noun] on | 83 |
|
| 2 | keep a close [noun] on | 81 |
|
| 3 | [verb] keep a [noun] on | 24 |
|
| 4 | [verb] keep a close [noun] | 13 |
|
