| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep an eye [prep] [pron] | 218 |
|
| 2 | keep an eye [prep] [pers pn] | 157 |
|
| 3 | keep [art] eye [prep] them | 27 |
|
| 4 | [verb] an eye [prep] them | 27 |
|
| 5 | keep an [noun] [prep] them | 27 |
|
| 6 | keep an eye [prep] they | 27 |
|
| 7 | keep a eye [prep] them | 27 |
|
| 8 | keep [art] eye [prep] them | 27 |
|
