| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] to keep in touch | 11 |
|
| 2 | need to keep in [noun sg] | 9 |
|
| 3 | [vb base] to keep in mind | 5 |
|
| 4 | have to keep in [noun sg] | 5 |
|
