| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [pers pn] is [prep] | 143 |
|
| 2 | [Wh adv] difficult [pers pn] is | 81 |
|
| 3 | difficult [pers pn] is [prep] | 26 |
|
