| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [pers pn] a | 252 |
|
| 2 | i [vb infin] [pers pn] a | 186 |
|
| 3 | could i [vb infin] [pers pn] | 118 |
|
| 4 | could i [vb infin] a | 74 |
|
