| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have long been | 36 |
|
| 2 | [Wh det] had long been | 22 |
|
| 3 | [Wh det] has long been | 17 |
|
| 4 | what have long been | 8 |
|
| 5 | [Wh det] have long been | 5 |
|
