| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have [adv] been | 304 |
|
| 2 | which have [adv] been | 222 |
|
| 3 | which have previously been | 85 |
|
| 4 | which [verb] previously been | 85 |
|
| 5 | [pron] have previously been | 23 |
|
| 6 | [Wh det] have previously been | 14 |
|
| 7 | which have previously been | 14 |
|
| 8 | which have previously [be] | 14 |
|
| 9 | which have previously [been] | 14 |
|
| 10 | which [vb base] previously been | 14 |
|
| 11 | which have previously been | 14 |
|
| 12 | which have previously be | 14 |
|
