| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [adj] [pers pn] is for | 67 |
|
| 2 | [Wh adv] difficult [pers pn] be for | 25 |
|
| 3 | [Wh adv] difficult [pers pn] [be] for | 25 |
|
| 4 | [Wh adv] difficult [pers pn] is [prep] | 21 |
|
| 5 | [adv] difficult [pers pn] is for | 20 |
|
| 6 | [Wh adv] difficult [pron] is for | 17 |
|
| 7 | [Wh adv] difficult [pers pn] [is] for | 17 |
|
