| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] [noun] on | 12383 |
|
| 2 | keep a [adj] [noun] | 889 |
|
| 3 | keep a [noun] on | 130 |
|
| 4 | keep [adj] [noun] on | 43 |
|
