| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [conj] [pron] is difficult | 13 |
|
| 2 | [coord] [adv] [pron] is difficult | 10 |
|
| 3 | [coord] [adv] [pron] is difficult | 10 |
|
| 4 | [coord] that [pron] is difficult | 7 |
|
| 5 | [coord] that [pron] is difficult | 7 |
|
| 6 | [coord] [that] [pron] is difficult | 7 |
|
| 7 | [coord] [subord] [pron] is difficult | 6 |
|
| 8 | [noun] [coord] [pron] is difficult | 50 |
|
| 9 | [noun sg] [coord] [pron] is difficult | 24 |
|
| 10 | [noun pl] [coord] [pron] is difficult | 19 |
|
| 11 | [adj] [coord] [pron] is difficult | 8 |
|
| 12 | [verb] [coord] [pron] is difficult | 8 |
|
| 13 | [adj] [coord] [pron] is difficult | 6 |
|
| 14 | [adv] [coord] [pron] is difficult | 5 |
|
| 15 | [adv] [coord] [pron] is difficult | 5 |
|
| 16 | [coord] [pron] is [adv] difficult | 100 |
|
| 17 | [coord] [pron] is [adv] difficult | 84 |
|
| 18 | [coord] [pron] is very difficult | 34 |
|
| 19 | [coord] [pron] is very difficult | 34 |
|
| 20 | [coord] [pron] is not difficult | 16 |
|
| 21 | [coord] [pron] is [not/n't] difficult | 16 |
|
| 22 | [coord] [pron] is not difficult | 16 |
|
| 23 | [coord] [pron] is often difficult | 10 |
|
| 24 | [coord] [pron] is often difficult | 10 |
|
| 25 | [coord] [pron] is more difficult | 7 |
|
| 26 | [coord] [pron] is more difficult | 7 |
|
| 27 | [coord] [pron] is extremely difficult | 5 |
|
| 28 | [coord] [pron] is extremely difficult | 5 |
|
| 29 | [coord] [pron] is difficult [verb] | 164 |
|
| 30 | [coord] [pron] is difficult [to-vb] | 163 |
|
