| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] keep a [noun] on | 80 |
|
| 2 | [modal v] keep a [noun sg] on | 80 |
|
| 3 | [modal v] keep a eye on | 72 |
|
| 4 | [modal v] [verb] a eye on | 72 |
|
| 5 | [modal v] keep a eye on | 72 |
|
| 6 | [modal v] keep a eye [prep] | 72 |
|
| 7 | [modal v] keep [art] eye on | 72 |
|
| 8 | [modal v] keep a eye [prep] | 72 |
|
