| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could so [adv] [vb infin] be | 6 |
|
| 2 | it could so [adv] [vb infin] [been] | 6 |
|
| 3 | it could so [adv] [vb infin] [be] | 6 |
|
| 4 | it could so [adv] [vb infin] been | 6 |
|
