| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] which [vb base] | 1970 |
|
| 2 | [prep] which [vb base] | 1970 |
|
| 3 | through which [verb] | 88 |
|
| 4 | through [pron] [vb base] | 58 |
|
| 5 | through which [vb base] | 13 |
|
| 6 | through [Wh det] [vb base] | 13 |
|
| 7 | through which [vb base] | 13 |
|
