| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb base] [prep] | 4330 |
|
| 2 | which [be] [prep] | 3673 |
|
| 3 | [vb base] [be] [prep] | 2999 |
|
| 4 | which [vb base] [be] | 1579 |
|
