| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have had | 628 |
|
| 2 | who have had | 203 |
|
| 3 | who had had | 159 |
|
| 4 | who has had | 131 |
|
| 5 | who 's had | 58 |
|
| 6 | who 've had | 52 |
|
| 7 | who 'd had | 25 |
|
