| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep an [noun sg] out | 48 |
|
| 2 | keep an eye out | 48 |
|
| 3 | keep an eye out | 48 |
|
| 4 | keep an [noun] out | 17 |
|
| 5 | keeping an [noun] out | 14 |
|
| 6 | to keep an [noun] out | 12 |
|
