| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] keep for a [adj] time | 6 |
|
| 2 | be keep for a [adj] time | 6 |
|
| 3 | [be] kept for a [adj] time | 6 |
|
| 4 | [be] keep for a long time | 5 |
|
| 5 | [be] keep for a long time | 5 |
|
