| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [vb pp] a | 290 |
|
| 2 | could have [vb pp] a | 273 |
|
| 3 | could [vb infin] had a | 60 |
|
| 4 | could [vb infin] made a | 33 |
|
| 5 | could 've [vb pp] a | 16 |
|
| 6 | could [vb infin] got a | 11 |
|
| 7 | could [vb infin] done a | 10 |
|
| 8 | could [vb infin] heard a | 10 |
|
| 9 | could [vb infin] taken a | 8 |
|
| 10 | could [vb infin] provided a | 6 |
|
| 11 | could [vb infin] given a | 6 |
|
