| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if we know [Wh adv] | 17 |
|
| 2 | if we know [Wh adv] | 17 |
|
| 3 | if we know [Wh adv] | 11 |
|
| 4 | if we know where | 9 |
|
| 5 | if we know how | 7 |
|
| 6 | if we knew [Wh adv] | 6 |
|
