| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could [verb] [det] [noun] | 52 |
|
| 2 | it could [verb] been [noun] | 43 |
|
| 3 | it [verb] been [det] [noun] | 42 |
|
| 4 | could [verb] been [det] [noun] | 30 |
|
| 5 | it could [verb] been [det] | 19 |
|
