| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have never [verb] | 39 |
|
| 2 | which have never [vb pp] | 38 |
|
| 3 | which had never [verb] | 17 |
|
| 4 | which has never [verb] | 14 |
|
| 5 | which have never [verb] | 8 |
|
| 6 | which have never have | 6 |
|
| 7 | which have never had | 6 |
|
