| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [v-ing] [prep] | 6841 |
|
| 2 | [vb -s] been [v-ing] | 4747 |
|
| 3 | [vb -s] been [prep] | 2666 |
|
| 4 | [vb -s] [v-ing] [prep] | 1368 |
|
