| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] keep an eye [prep] [pron] | 43 |
|
| 2 | can keep an [noun] [prep] [pron] | 14 |
|
| 3 | can keep an [noun sg] [prep] [pron] | 14 |
|
| 4 | can keep [art] eye [prep] [pron] | 14 |
|
| 5 | can keep a eye [prep] [pron] | 14 |
|
| 6 | can [verb] an eye [prep] [pron] | 14 |
|
| 7 | can keep an eye [prep] [pron] | 14 |
|
| 8 | can keep [art] eye [prep] [pron] | 14 |
|
