| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [is] [prep] | 271 |
|
| 2 | [prep] [pron] [is] for | 33 |
|
| 3 | [prep] what [be] for | 19 |
|
| 4 | [prep] what [is] for | 8 |
|
