| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [v-ing] | 19916 |
|
| 2 | [vb base] been [v-ing] | 6806 |
|
| 3 | [vb base] [verb] [v-ing] | 1402 |
|
| 4 | [vb base] [verb] been | 714 |
|
