| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [v-ing] | 6806 |
|
| 2 | [Wh pn] [vb base] been | 1264 |
|
| 3 | [Wh pn] [vb base] [v-ing] | 143 |
|
