| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] difficult it was [prep] | 11 |
|
| 2 | how difficult it was [prep] | 10 |
|
| 3 | how difficult it was [prep] | 10 |
|
| 4 | [Wh adv] difficult it was [prep] | 10 |
|
| 5 | difficult it was [prep] [pers pn] | 6 |
|
| 6 | difficult it was [prep] [pron] | 6 |
|
