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