| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could have be a [noun sg] | 42 |
|
| 2 | it could have [been] a [noun sg] | 42 |
|
| 3 | it could have been a [noun sg] | 42 |
|
| 4 | it could have [be] a [noun sg] | 42 |
|
| 5 | it could have a [adj] [noun sg] | 7 |
|
| 6 | it could have a [adj] [noun sg] | 7 |
|
