| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [adj] [verb] [Wh adv] [pron] could | 31 |
|
| 2 | [be] [adj] [verb] [Wh adv] [pron] could | 31 |
|
| 3 | [be] difficult [verb] [Wh adv] [pron] could | 18 |
|
| 4 | [be] difficult [verb] [Wh adv] [pron] could | 18 |
|
| 5 | [be] hard [verb] [Wh adv] [pron] could | 9 |
|
| 6 | [be] hard [verb] [Wh adv] [pron] could | 9 |
|
| 7 | [be] [verb] [Wh adv] [pron] could [vb infin] | 8 |
|
| 8 | [be] [verb] [Wh adv] [pron] could [verb] | 8 |
|
