| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] at [adj] stage [prep] | 9 |
|
| 2 | [vb past] at [adj] stage [prep] | 9 |
|
| 3 | [vb past] at one stage [prep] | 5 |
|
| 4 | [vb past] at [adj] stage of | 5 |
|
| 5 | [vb past] at [adj] stage of | 5 |
|
| 6 | [vb past] at [num] stage [prep] | 5 |
|
| 7 | [vb past] at one stage [prep] | 5 |
|
