| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | ca n't [be] | 1905 |
|
| 2 | ca [not/n't] [be] | 1905 |
|
| 3 | ca not [be] | 1905 |
|
| 4 | ca [adv] be | 1905 |
|
