| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep a close [noun] on | 81 |
|
| 2 | keep a [adj] watch on | 48 |
|
| 3 | keep a [adj] watch on | 44 |
|
| 4 | keep a close watch on | 30 |
|
| 5 | keep a close watch [prep] | 28 |
|
| 6 | [verb] a close watch on | 28 |
|
| 7 | keep a close watch [prep] | 28 |
|
| 8 | keep a close watch on | 27 |
|
| 9 | keep [art] close watch on | 27 |
|
| 10 | keep [art] close watch on | 27 |
|
| 11 | keep a close watch on | 27 |
|
