| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb past] be [v-ing] | 46 |
|
| 2 | [adv] [vb past] [be] [v-ing] | 45 |
|
| 3 | [adv] had [be] [v-ing] | 37 |
|
| 4 | [adv] [vb past] been [v-ing] | 36 |
|
| 5 | [adv] [vb past] [been] [v-ing] | 36 |
|
| 6 | [adv] [vb past] [was/were] [v-ing] | 10 |
|
| 7 | before [vb past] [be] [v-ing] | 8 |
|
| 8 | before [vb past] [be] [v-ing] | 8 |
|
| 9 | [adv] [vb past] was [v-ing] | 8 |
|
