| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [to-vb] at [adj] stage | 21 |
|
| 2 | [adj] [to-vb] at [det] stage | 21 |
|
| 3 | [adj] [to-vb] at [adj] stage | 20 |
|
| 4 | [adj] [to-vb] at this stage | 16 |
|
| 5 | [adj] [to-vb] at this stage | 16 |
|
| 6 | difficult [to-vb] at [adj] stage | 5 |
|
| 7 | difficult [to-vb] at [adj] stage | 5 |
|
