| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] never [verb] | 191 |
|
| 2 | it [verb] never [vb pp] | 185 |
|
| 3 | it [verb] [adv] occurred | 101 |
|
| 4 | [pron] [verb] never occurred | 36 |
|
| 5 | it [verb] never occur | 35 |
|
