| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to keep a [adj] eye on | 33 |
|
| 2 | to keep a close eye [prep] | 10 |
|
| 3 | to keep a watchful eye [prep] | 5 |
|
| 4 | to keep a wary eye [prep] | 5 |
|
