| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] [adv prt] [prep] [art] | 3259 |
|
| 2 | could [verb] [adv] [prep] [art] | 619 |
|
| 3 | could [verb] [adv prt] [prep] [art] | 382 |
|
| 4 | could [verb] [adv prt] [prep] [art] | 382 |
|
