| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep an eye out [prep] | 39 |
|
| 2 | keep a eye out for | 38 |
|
| 3 | keep a eye out [prep] | 15 |
|
| 4 | keeping a eye out [prep] | 11 |
|
| 5 | to keep a eye out [prep] | 9 |
|
