| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] [verb] [det] [conj] | 376 |
|
| 2 | [modal v] [adv] [verb] [det] [conj] | 376 |
|
| 3 | could [adv] [verb] [adj] [conj] | 119 |
|
| 4 | could [adv] [verb] [det] [conj] | 49 |
|
