| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [pers pn] be often difficult [to-vb] | 12 |
|
| 2 | [coord] it be often difficult [verb] | 10 |
|
| 3 | [coord] [pers pn] is often difficult [verb] | 9 |
|
| 4 | but [pers pn] be often difficult [verb] | 7 |
|
| 5 | and [pers pn] be often difficult [verb] | 5 |
|
