| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | unheard of [prep] | 52 |
|
| 2 | unheard of [prep] | 52 |
|
| 3 | [adj] of for | 25 |
|
| 4 | unheard [prep] for | 14 |
|
| 5 | unheard of for | 14 |
|
| 6 | unheard of for | 14 |
|
| 7 | unheard [prep] for | 14 |
|
