| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could keep a eye | 11 |
|
| 2 | [pers pn] could keep a eye | 11 |
|
| 3 | could keep a eye [prep] | 13 |
|
| 4 | could keep a eye on | 13 |
|
| 5 | could keep a eye [prep] | 13 |
|
| 6 | could keep a eye on | 13 |
|
