| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to keep [adv prt] to [noun sg] | 21 |
|
| 2 | to keep up to [noun sg] | 21 |
|
| 3 | to keep [adv] to [noun sg] | 21 |
|
| 4 | to keep up to [noun sg] | 21 |
|
| 5 | to keep [adv] to date | 21 |
|
