| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] to keep an eye on | 13 |
|
| 2 | [vb pp] [verb] an eye on | 13 |
|
| 3 | [vb pp] [to-vb] an eye on | 13 |
|
| 4 | [vb pp] keep an eye on | 13 |
|
| 5 | [vb pp] an eye on [pron] | 5 |
|
