| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] [v-ing] on this | 18 |
|
| 2 | have [been] [v-ing] on this | 18 |
|
| 3 | [vb base] [been] [v-ing] on this | 8 |
|
| 4 | 've [been] [v-ing] on this | 6 |
|
| 5 | [vb -s] [been] [v-ing] on this | 5 |
|
| 6 | [been] [v-ing] on this [noun] | 12 |
|
| 7 | [been] [v-ing] on this [noun sg] | 12 |
|
