| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | an [noun] on [adj] [noun] | 481 |
|
| 2 | keep an [noun] on [noun] | 14 |
|
| 3 | keep an [noun] on [adj] | 9 |
|
| 4 | keep [noun] on [adj] [noun] | 6 |
|
