| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been a [adv] difficult [noun sg] | 10 |
|
| 2 | have been a [adv] difficult [noun sg] | 10 |
|
| 3 | have been a very difficult [noun sg] | 5 |
|
| 4 | have been a very difficult [noun sg] | 5 |
|
