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