| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [v-ing] | 4747 |
|
| 2 | [Wh pn] [vb -s] been | 1171 |
|
| 3 | [Wh pn] [vb -s] [v-ing] | 122 |
|
