| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] which [modal v] be difficult | 18 |
|
| 2 | [noun sg] which [modal v] be difficult | 11 |
|
| 3 | [noun pl] which [modal v] be difficult | 6 |
|
| 4 | which [pron] [modal v] be difficult | 6 |
|
| 5 | which [pers pn] [modal v] be difficult | 6 |
|
| 6 | which it [modal v] be difficult | 6 |
|
| 7 | which it [modal v] be difficult | 6 |
|
| 8 | which [modal v] be [adv] difficult | 9 |
|
| 9 | which [modal v] be [adv] difficult | 9 |
|
| 10 | which [modal v] be difficult [verb] | 37 |
|
| 11 | which [modal v] be difficult [to-vb] | 37 |
|
