| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have heard | 79 |
|
| 2 | [Wh pn] had heard | 40 |
|
| 3 | [Wh pn] have heard | 16 |
|
| 4 | [Wh pn] has heard | 12 |
|
| 5 | [Wh pn] 'd heard | 8 |
|
