| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [noun] [vb past] been [v-ing] | 62 |
|
| 2 | [subord] [noun] had [been] [v-ing] | 61 |
|
| 3 | [subord] [noun prp] [vb past] [been] [v-ing] | 54 |
|
| 4 | if [noun] [vb past] [been] [v-ing] | 21 |
|
| 5 | while [noun] [vb past] [been] [v-ing] | 7 |
|
| 6 | where [noun] [vb past] [been] [v-ing] | 6 |
|
| 7 | because [noun] [vb past] [been] [v-ing] | 6 |
|
| 8 | when [noun] [vb past] [been] [v-ing] | 5 |
|
