| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] been [verb] | 1153 |
|
| 2 | could [verb] been [v-ing] | 93 |
|
| 3 | [vb mod] [verb] been talking | 15 |
|
| 4 | [modal v] [verb] been talking | 15 |
|
| 5 | could [verb] [be] talking | 6 |
|
| 6 | could [verb] be talking | 6 |
|
| 7 | could [verb] [been] talking | 6 |
|
| 8 | could [verb] been talk | 6 |
|
| 9 | could [verb] been talking | 6 |
|
