| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] if he could [not/n't] [verb] | 6 |
|
| 2 | [adv] if he could [adv] [verb] | 6 |
|
| 3 | [adv] if he could [adv] [vb infin] | 6 |
|
| 4 | [adv] if he could [adv] [verb] | 6 |
|
| 5 | [adv] if he could not [verb] | 6 |
|
| 6 | even if he could [adv] [verb] | 5 |
|
