| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] occur again | 9 |
|
| 2 | [modal v] occur again | 8 |
|
| 3 | [vb mod] occur again | 8 |
|
| 4 | [not/n't] occur again | 7 |
|
| 5 | not occur again | 7 |
|
