| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [adv] [adj] for | 41 |
|
| 2 | it have been [adv] difficult [prep] | 10 |
|
| 3 | it have been [adv] difficult [prep] | 10 |
|
| 4 | [pron] have been [adv] difficult for | 10 |
|
| 5 | it have [be] [adv] difficult for | 9 |
|
| 6 | it have be [adv] difficult for | 9 |
|
| 7 | it have [been] [adv] difficult for | 9 |
|
| 8 | it [verb] been [adv] difficult for | 9 |
|
| 9 | it have been [adv] difficult for | 9 |
|
