| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | can [not/n't] [vb infin] [pron] [verb] [prep] | 119 |
|
| 2 | can [not/n't] [vb infin] [pron] [vb past] [prep] | 17 |
|
| 3 | can [not/n't] [vb infin] [pron] happen [prep] | 14 |
|
| 4 | [modal v] [not/n't] [vb infin] [pron] happened [prep] | 10 |
|
| 5 | can [not/n't] [verb] [pron] happened [prep] | 5 |
|
| 6 | can [adv] [vb infin] [pron] happened [prep] | 5 |
|
