| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] an eye | 89 |
|
| 2 | [modal v] keep an [noun sg] | 84 |
|
| 3 | [modal v] keep an [noun] | 84 |
|
| 4 | [modal v] keep an eye | 78 |
|
| 5 | [modal v] keep [art] eye | 78 |
|
| 6 | [modal v] keep [art] eye | 78 |
|
| 7 | [modal v] keep a eye | 78 |
|
