| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [been] some | 9 |
|
| 2 | could [verb] been some | 9 |
|
| 3 | could have [been] some | 9 |
|
| 4 | could have [been] some | 9 |
|
| 5 | could [vb infin] [been] some | 9 |
|
| 6 | could [verb] [been] some | 9 |
|
