| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep a watchful eye [prep] | 28 |
|
| 2 | [verb] a watchful eye [prep] | 28 |
|
| 3 | [verb] a watchful eye on | 26 |
|
| 4 | [verb] a watchful eye on | 26 |
|
| 5 | [v-ing] a watchful eye [prep] | 9 |
|
| 6 | keeping a watchful eye [prep] | 9 |
|
| 7 | kept a watchful eye [prep] | 6 |
|
| 8 | [vb past] a watchful eye [prep] | 6 |
|
| 9 | to keep a watchful eye [prep] | 5 |
|
| 10 | [to-vb] a watchful eye [prep] | 5 |
|
