| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have been [verb] | 4625 |
|
| 2 | which have been [vb pp] | 4261 |
|
| 3 | [pron] have been identified | 66 |
|
| 4 | which [verb] been identified | 33 |
|
| 5 | which have be identified | 33 |
|
| 6 | which have [been] identified | 33 |
|
| 7 | which have [be] identified | 33 |
|
| 8 | which have been identify | 33 |
|
