| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] for any length of time | 24 |
|
| 2 | [to-vb] for any length of time | 7 |
|
| 3 | stay for any length of time | 7 |
|
| 4 | [vb pp] for any length of time | 6 |
|
