| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] to keep an eye on | 55 |
|
| 2 | need [verb] an eye on | 7 |
|
| 3 | need keep an eye on | 7 |
|
| 4 | need to keep an eye on | 6 |
|
| 5 | need [to-vb] an eye on | 6 |
|
| 6 | need to keep [art] eye on | 6 |
|
| 7 | need to keep an eye [prep] | 6 |
|
| 8 | need to keep an eye [prep] | 6 |
|
| 9 | need to keep an [noun sg] on | 6 |
|
| 10 | need to keep a eye on | 6 |
|
| 11 | need to keep an eye on | 6 |
|
| 12 | need to keep an [noun] on | 6 |
|
| 13 | need to keep [art] eye on | 6 |
|
