| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] [verb] | 15990 |
|
| 2 | could [be] [v-ing] | 656 |
|
| 3 | [vb mod] [be] talking | 220 |
|
| 4 | [modal v] [be] talking | 220 |
|
| 5 | could [be] talk | 13 |
|
| 6 | could [be] talking | 11 |
|
