| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he could [adv] [vb infin] [vb pp] a | 30 |
|
| 2 | he could [adv] have [vb pp] a | 30 |
|
| 3 | he could [adv] [vb infin] [vb pp] a | 25 |
|
| 4 | he could not [vb infin] [vb pp] a | 17 |
|
| 5 | he could [not/n't] [vb infin] [vb pp] a | 17 |
|
| 6 | he could [adv] [vb infin] [vb pp] a | 13 |
|
| 7 | he could not [vb infin] [vb pp] a | 10 |
|
| 8 | he could n't [vb infin] [vb pp] a | 7 |
|
| 9 | he could [adv] [vb infin] [vb pp] an | 5 |
|
