| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have have a | 57 |
|
| 2 | not have have a | 27 |
|
| 3 | could not have have | 18 |
|
| 4 | could not have a | 11 |
|
| 5 | could not have a | 11 |
|
