| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] is difficult [verb] [prep] | 153 |
|
| 2 | [pers pn] is difficult [verb] [prep] | 143 |
|
| 3 | it is difficult [verb] [prep] | 143 |
|
| 4 | it is difficult [verb] [prep] | 143 |
|
| 5 | [noun] is difficult [verb] [prep] | 56 |
|
| 6 | [noun sg] is difficult [verb] [prep] | 46 |
|
| 7 | [adj] is difficult [verb] [prep] | 13 |
|
| 8 | [det] is difficult [verb] [prep] | 10 |
|
| 9 | [Wh det] is difficult [verb] [prep] | 10 |
|
| 10 | which is difficult [verb] [prep] | 9 |
|
| 11 | which is difficult [verb] [prep] | 9 |
|
| 12 | [conj] is difficult [verb] [prep] | 8 |
|
| 13 | this is difficult [verb] [prep] | 8 |
|
| 14 | this is difficult [verb] [prep] | 8 |
|
| 15 | [noun pl] is difficult [verb] [prep] | 7 |
|
| 16 | [coord] is difficult [verb] [prep] | 6 |
|
| 17 | is [adv] difficult [verb] [prep] | 152 |
|
| 18 | is [adv] difficult [verb] [prep] | 138 |
|
| 19 | is very difficult [verb] [prep] | 39 |
|
| 20 | is very difficult [verb] [prep] | 39 |
|
| 21 | is more difficult [verb] [prep] | 20 |
|
| 22 | is more difficult [verb] [prep] | 20 |
|
| 23 | is often difficult [verb] [prep] | 18 |
|
| 24 | is often difficult [verb] [prep] | 18 |
|
| 25 | is not difficult [verb] [prep] | 14 |
|
| 26 | is [not/n't] difficult [verb] [prep] | 14 |
|
| 27 | is not difficult [verb] [prep] | 14 |
|
| 28 | is extremely difficult [verb] [prep] | 7 |
|
| 29 | is extremely difficult [verb] [prep] | 7 |
|
| 30 | is sometimes difficult [verb] [prep] | 6 |
|
