| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | an [noun sg] on the [noun sg] | 829 |
|
| 2 | keep an [noun sg] on the | 107 |
|
| 3 | keep [noun sg] on the [noun sg] | 23 |
|
| 4 | keep an [noun sg] on [noun sg] | 18 |
|
