| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [vb past] [been] [v-ing] [prep] | 178 |
|
| 2 | [vb past] [been] [v-ing] [prep] [det] | 148 |
|
| 3 | [Wh pn] [vb past] [been] [v-ing] [det] | 15 |
|
| 4 | [Wh pn] [vb past] [been] [prep] [det] | 11 |
|
