| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] which they had previously | 6 |
|
| 2 | [prep] which they had previously | 6 |
|
| 3 | [noun] which they had previously | 5 |
|
| 4 | which they had previously [vb pp] | 9 |
|
| 5 | which they had previously [verb] | 9 |
|
