| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he could not have been | 34 |
|
| 2 | he could not have be | 34 |
|
| 3 | he could not have be | 34 |
|
| 4 | he could not have be | 18 |
|
| 5 | he could n't have be | 16 |
|
