| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] keep an [noun] on | 14 |
|
| 2 | [prep] [verb] an eye on | 14 |
|
| 3 | [prep] keep an [noun sg] on | 14 |
|
| 4 | [prep] keep a eye on | 13 |
|
| 5 | [prep] keep an eye [prep] | 13 |
|
| 6 | [prep] keep [art] eye on | 13 |
|
| 7 | [prep] keep [art] eye on | 13 |
|
| 8 | [prep] keep an eye on | 13 |
|
| 9 | [prep] keep an eye on | 13 |
|
| 10 | [prep] keep an eye [prep] | 13 |
|
