| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [been] [v-ing] [prep] [noun] | 451 |
|
| 2 | [Wh det] [vb past] [been] [v-ing] [prep] | 75 |
|
| 3 | [Wh det] [vb past] [been] [prep] [noun] | 70 |
|
| 4 | [Wh det] [vb past] [v-ing] [prep] [noun] | 20 |
|
| 5 | [Wh det] [vb past] [been] [v-ing] [noun] | 13 |
|
