| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could [vb infin] been a [adv] | 5 |
|
| 2 | it could [vb infin] be a [adv] | 5 |
|
| 3 | it could [vb infin] [been] a [adv] | 5 |
|
| 4 | it could [vb infin] [be] a [adv] | 5 |
|
| 5 | it could [vb infin] a [noun sg] [adv] | 5 |
|
| 6 | it could [vb infin] a [noun] [adv] | 5 |
|
| 7 | it could [vb infin] a [adv] [adj] | 6 |
|
| 8 | it could [vb infin] a [adv] [adj] | 5 |
|
