| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has long been [verb] that [adj] | 7 |
|
| 2 | have long been [verb] that [adj] | 7 |
|
| 3 | have long been [vb pp] that [adj] | 7 |
|
| 4 | have long been known that [adj] | 5 |
|
| 5 | have long been know that [adj] | 5 |
|
