| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [adv] [adj] it is | 159 |
|
| 2 | [art] [adv] difficult [pron] is | 20 |
|
| 3 | [art] [adv] difficult it is | 19 |
|
| 4 | [art] [adv] difficult it be | 19 |
|
| 5 | [art] [adv] difficult it [is] | 19 |
|
| 6 | [art] [adv] difficult [pers pn] is | 19 |
|
| 7 | [art] [adv] difficult it is | 19 |
|
| 8 | [art] [adv] difficult it [be] | 19 |
|
