| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] difficult [pron] [modal v] be [verb] | 20 |
|
| 2 | [Wh adv] difficult [pron] [vb mod] be [verb] | 20 |
|
| 3 | [Wh adv] [adj] [pron] can be [verb] | 18 |
|
| 4 | [Wh adv] [adj] [pron] can be [verb] | 18 |
|
| 5 | [Wh adv] difficult [pron] can [be] [verb] | 7 |
|
| 6 | [adv] difficult [pron] can be [verb] | 7 |
|
| 7 | [Wh adv] difficult [pron] can [be] [verb] | 7 |
|
| 8 | [Wh adv] difficult [pron] can be [verb] | 7 |
|
| 9 | [Wh adv] difficult [pron] can be [verb] | 7 |
|
| 10 | [Wh adv] difficult [pron] can be [verb] | 7 |
|
