| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] it [verb] | 9 |
|
| 2 | could [not/n't] it [verb] | 9 |
|
| 3 | could n't it [verb] | 9 |
|
| 4 | could [not/n't] it [vb infin] | 8 |
|
| 5 | could [not/n't] it have | 7 |
|
| 6 | could [not/n't] it have | 7 |
|
