| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb mod] have been [adj] | 2486 |
|
| 2 | [pron] [vb mod] have been [adj] | 1731 |
|
| 3 | [pron] [vb mod] [verb] been difficult | 49 |
|
| 4 | [pron] [vb mod] have [been] difficult | 49 |
|
| 5 | [pron] [vb mod] have [be] difficult | 49 |
|
| 6 | [pron] [modal v] have been difficult | 49 |
|
| 7 | [pron] [vb mod] have be difficult | 49 |
|
| 8 | [pron] [vb mod] have been difficult | 49 |
|
