| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] keep an eye on | 13 |
|
| 2 | [noun pl] keep [art] eye on | 13 |
|
| 3 | [noun pl] keep a eye on | 13 |
|
| 4 | [noun pl] to keep [art] eye on | 8 |
|
