| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb base] to keep [art] | 17 |
|
| 2 | they [vb base] to keep the | 11 |
|
| 3 | they [vb base] to keep the | 11 |
|
| 4 | they [vb base] to keep a | 6 |
|
| 5 | they [vb base] to keep a | 6 |
|
| 6 | they have to keep [art] | 5 |
|
