| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [adv] [vb pp] | 1084 |
|
| 2 | [vb mod] [vb infin] [adv] [vb pp] | 1084 |
|
| 3 | could [vb infin] [adv] [verb] | 228 |
|
| 4 | could [vb infin] [adv] [vb pp] | 125 |
|
| 5 | could [verb] [adv] [vb pp] | 123 |
|
| 6 | could [vb infin] [adv] [vb pp] | 123 |
|
