| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have be [verb] about | 10 |
|
| 2 | could have been [verb] about | 10 |
|
| 3 | could have be [verb] about | 10 |
|
| 4 | could have be [verb] about | 8 |
|
| 5 | could have be [v-ing] about | 6 |
|
| 6 | could have be talk about | 5 |
|
| 7 | could have be talking about | 5 |
|
