| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] [prep] | 3646 |
|
| 2 | [adv] [vb infin] [prep] a | 3192 |
|
| 3 | could [adv] [vb infin] a | 1492 |
|
| 4 | could [vb infin] [prep] a | 1096 |
|
| 5 | could [adv] [prep] a | 8 |
|
