| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been a [noun sg] [prep] | 2525 |
|
| 2 | have been a difficult [noun sg] | 24 |
|
| 3 | have a difficult [noun sg] [prep] | 18 |
|
| 4 | been a difficult [noun sg] [prep] | 9 |
|
