| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have [not/n't] experienced | 12 |
|
| 2 | who have not experienced | 11 |
|
| 3 | who have [not/n't] experienced | 5 |
|
| 4 | who has [not/n't] experienced | 5 |
|
