| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] keeping up to | 9 |
|
| 2 | [prep] keeping up to | 9 |
|
| 3 | keeping [pron] up to | 11 |
|
| 4 | keeping [pers pn] up to | 9 |
|
| 5 | keeping up to [noun] | 19 |
|
| 6 | keeping up to [noun sg] | 19 |
|
| 7 | keeping up to date | 18 |
|
| 8 | keeping up to date | 18 |
|
