| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep [prep] a long | 7 |
|
| 2 | keep [prep] a long | 7 |
|
| 3 | kept [prep] a long | 7 |
|
| 4 | keep for a long | 6 |
|
| 5 | keep for a long | 6 |
|
