| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could [adv] [vb infin] [noun] | 41 |
|
| 2 | it could [adv] [vb infin] [noun sg] | 22 |
|
| 3 | it could also [vb infin] [noun] | 20 |
|
| 4 | it could [adv] [vb infin] [noun pl] | 14 |
|
| 5 | it could well [vb infin] [noun] | 5 |
|
| 6 | it could only [vb infin] [noun] | 5 |
|
