| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] be keeping an eye on | 5 |
|
| 2 | [verb] been keeping an eye on | 5 |
|
| 3 | [verb] [been] keeping an eye on | 5 |
|
| 4 | [verb] [be] keeping an eye on | 5 |
|
