| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep an [noun sg] [prep] | 510 |
|
| 2 | an [noun sg] out [prep] | 127 |
|
| 3 | keep an [noun sg] out | 48 |
|
| 4 | keep [noun sg] out [prep] | 28 |
|
