| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep up to [noun sg] [prep] the | 12 |
|
| 2 | keep up to date [prep] the | 11 |
|
| 3 | keep up to date [prep] the | 11 |
|
| 4 | keep up to [noun] with the | 8 |
|
