| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep [art] close eye on [det] | 7 |
|
| 2 | keep a close eye on [det] | 7 |
|
| 3 | keep a close eye on [det] | 6 |
|
| 4 | keep [art] close eye on [det] | 5 |
|
