| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] for a long time | 55 |
|
| 2 | been [vb pp] for a long time | 29 |
|
| 3 | be [vb pp] for a long time | 18 |
|
| 4 | be known for a long time | 8 |
|
| 5 | be kept for a long time | 5 |
|
