| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | keep [prep] a long time | 5 |
|
| 2 | keep for [art] long time | 5 |
|
| 3 | keep [prep] [art] long time | 5 |
|
| 4 | keep [prep] a long time | 5 |
|
| 5 | kept [prep] [art] long time | 5 |
|
| 6 | keep for [art] long time | 5 |
|
| 7 | keep [prep] [art] long time | 5 |
|
| 8 | keep [prep] [art] long time | 5 |
|
