| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [pers pn] is [adv] difficult | 82 |
|
| 2 | [coord] it is [adv] difficult | 82 |
|
| 3 | and [pers pn] is [adv] difficult | 47 |
|
| 4 | but [pers pn] is [adv] difficult | 35 |
|
| 5 | [coord] [pers pn] is very difficult | 34 |
|
| 6 | [coord] [pers pn] is often difficult | 10 |
|
| 7 | [coord] [pers pn] is more difficult | 6 |
|
| 8 | [coord] [pers pn] is extremely difficult | 5 |
|
