| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [adv] [noun sg] [prep] | 22 |
|
| 2 | could [verb] [adv prt] [noun sg] [prep] | 12 |
|
| 3 | could [verb] [adv] [noun sg] [prep] | 9 |
|
