| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] [noun sg] on | 12306 |
|
| 2 | keep a [adj] [noun sg] | 876 |
|
| 3 | keep a [noun sg] on | 130 |
|
| 4 | keep [adj] [noun sg] on | 23 |
|
