| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at any stage | 37 |
|
| 2 | [vb pp] at any stage | 19 |
|
| 3 | [vb infin] at any stage | 8 |
|
| 4 | [to-vb] at any stage | 5 |
|
