| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [indef pn] [adv] | 144 |
|
| 2 | [vb infin] of [indef pn] [adv] | 125 |
|
| 3 | could [vb infin] of [indef pn] | 80 |
|
| 4 | could [vb infin] of [adv] | 6 |
|
