| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not be | 3440 |
|
| 2 | could not [be] | 3437 |
|
| 3 | could not be | 3437 |
|
| 4 | could not [be] | 2517 |
|
| 5 | could n't [be] | 923 |
|
