| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] have been [v-ing] [prep] | 337 |
|
| 2 | [Wh pn] have been [adj] [prep] | 327 |
|
| 3 | have been [v-ing] [adj] [prep] | 211 |
|
| 4 | [Wh pn] have been [v-ing] [adj] | 71 |
|
