| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [subord] [pron] | 243 |
|
| 2 | it could [vb infin] [pron] | 196 |
|
| 3 | it [vb infin] [subord] [pron] | 121 |
|
| 4 | it could [vb infin] [subord] | 18 |
|
