| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which be unusual [prep] | 23 |
|
| 2 | which is unusual [prep] | 12 |
|
| 3 | which be unusual for | 12 |
|
| 4 | which was unusual [prep] | 10 |
|
| 5 | which be unusual in | 10 |
|
