| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [pron] is [prep] | 311 |
|
| 2 | what [pron] be for | 108 |
|
| 3 | what [pron] [be] for | 108 |
|
| 4 | what [pron] [is] for | 70 |
|
| 5 | [pron] [pron] is for | 52 |
|
| 6 | [Wh det] [pron] is for | 46 |
|
| 7 | what [pron] is for | 41 |
|
