| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [vb base] [prep] | 3728 |
|
| 2 | [vb base] [prep] an | 1696 |
|
| 3 | who [vb base] an | 155 |
|
| 4 | who [prep] an | 15 |
|
