| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have never [verb] [prep] | 1092 |
|
| 2 | have never [vb pp] [prep] | 1085 |
|
| 3 | have [adv] occurred [prep] | 208 |
|
| 4 | have [adv] occurred [prep] | 127 |
|
| 5 | have never occurred [prep] | 47 |
|
| 6 | have never occur [prep] | 47 |
|
| 7 | [verb] never occurred [prep] | 47 |
|
