| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [be] that [pron] | 6 |
|
| 2 | could have [been] [that] [pron] | 6 |
|
| 3 | could have been [that] [pron] | 6 |
|
| 4 | could have [be] [that] [pron] | 6 |
|
| 5 | could have be [that] [pron] | 6 |
|
