| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [det] [noun sg] | 231499 |
|
| 2 | to keep [prep] [noun sg] | 255 |
|
| 3 | to keep [det] [noun sg] | 144 |
|
| 4 | to keep [prep] [det] | 25 |
|
