| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [vb past] [been] [prep] | 352 |
|
| 2 | who [vb past] [prep] [noun pl] | 235 |
|
| 3 | [vb past] [been] [prep] [noun pl] | 103 |
|
| 4 | who [vb past] [been] [noun pl] | 22 |
|
