| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep a close [noun] on | 86 |
|
| 2 | keep a [adj] watch on | 48 |
|
| 3 | keep a close watch [prep] | 31 |
|
| 4 | keep a close watch [prep] | 31 |
|
| 5 | keep [art] close watch on | 31 |
|
| 6 | [verb] a close watch on | 31 |
|
| 7 | keep [art] close watch on | 31 |
|
| 8 | keep a close watch on | 30 |
|
| 9 | keep a close watch on | 30 |
|
