| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could [verb] | 2659 |
|
| 2 | it could [vb infin] | 2635 |
|
| 3 | it [modal v] save | 152 |
|
| 4 | [pron] could save | 89 |
|
| 5 | it could save | 16 |
|
