| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] keep an eye on | 72 |
|
| 2 | [vb mod] keep an eye on | 72 |
|
| 3 | could keep an [noun sg] on | 13 |
|
| 4 | could keep an eye on | 13 |
|
| 5 | could keep an eye on | 13 |
|
| 6 | could [verb] an eye on | 13 |
|
| 7 | could keep [art] eye on | 13 |
|
| 8 | could keep a eye on | 13 |
|
| 9 | could keep an eye [prep] | 13 |
|
| 10 | could keep an eye on | 13 |
|
| 11 | could keep [art] eye on | 13 |
|
| 12 | could keep an [noun] on | 13 |
|
| 13 | could keep an eye [prep] | 13 |
|
